What are the numbers divisible by 85?
85, 170, 255, 340, 425, 510, 595, 680, 765, 850, 935, 1020, 1105, 1190, 1275, 1360, 1445, 1530, 1615, 1700, 1785, 1870, 1955, 2040, 2125, 2210, 2295, 2380, 2465, 2550, 2635, 2720, 2805, 2890, 2975, 3060, 3145, 3230, 3315, 3400, 3485, 3570, 3655, 3740, 3825, 3910, 3995, 4080, 4165, 4250, 4335, 4420, 4505, 4590, 4675, 4760, 4845, 4930, 5015, 5100, 5185, 5270, 5355, 5440, 5525, 5610, 5695, 5780, 5865, 5950, 6035, 6120, 6205, 6290, 6375, 6460, 6545, 6630, 6715, 6800, 6885, 6970, 7055, 7140, 7225, 7310, 7395, 7480, 7565, 7650, 7735, 7820, 7905, 7990, 8075, 8160, 8245, 8330, 8415, 8500, 8585, 8670, 8755, 8840, 8925, 9010, 9095, 9180, 9265, 9350, 9435, 9520, 9605, 9690, 9775, 9860, 9945, 10030, 10115, 10200, 10285, 10370, 10455, 10540, 10625, 10710, 10795, 10880, 10965, 11050, 11135, 11220, 11305, 11390, 11475, 11560, 11645, 11730, 11815, 11900, 11985, 12070, 12155, 12240, 12325, 12410, 12495, 12580, 12665, 12750, 12835, 12920, 13005, 13090, 13175, 13260, 13345, 13430, 13515, 13600, 13685, 13770, 13855, 13940, 14025, 14110, 14195, 14280, 14365, 14450, 14535, 14620, 14705, 14790, 14875, 14960, 15045, 15130, 15215, 15300, 15385, 15470, 15555, 15640, 15725, 15810, 15895, 15980, 16065, 16150, 16235, 16320, 16405, 16490, 16575, 16660, 16745, 16830, 16915, 17000, 17085, 17170, 17255, 17340, 17425, 17510, 17595, 17680, 17765, 17850, 17935, 18020, 18105, 18190, 18275, 18360, 18445, 18530, 18615, 18700, 18785, 18870, 18955, 19040, 19125, 19210, 19295, 19380, 19465, 19550, 19635, 19720, 19805, 19890, 19975, 20060, 20145, 20230, 20315, 20400, 20485, 20570, 20655, 20740, 20825, 20910, 20995, 21080, 21165, 21250, 21335, 21420, 21505, 21590, 21675, 21760, 21845, 21930, 22015, 22100, 22185, 22270, 22355, 22440, 22525, 22610, 22695, 22780, 22865, 22950, 23035, 23120, 23205, 23290, 23375, 23460, 23545, 23630, 23715, 23800, 23885, 23970, 24055, 24140, 24225, 24310, 24395, 24480, 24565, 24650, 24735, 24820, 24905, 24990, 25075, 25160, 25245, 25330, 25415, 25500, 25585, 25670, 25755, 25840, 25925, 26010, 26095, 26180, 26265, 26350, 26435, 26520, 26605, 26690, 26775, 26860, 26945, 27030, 27115, 27200, 27285, 27370, 27455, 27540, 27625, 27710, 27795, 27880, 27965, 28050, 28135, 28220, 28305, 28390, 28475, 28560, 28645, 28730, 28815, 28900, 28985, 29070, 29155, 29240, 29325, 29410, 29495, 29580, 29665, 29750, 29835, 29920, 30005, 30090, 30175, 30260, 30345, 30430, 30515, 30600, 30685, 30770, 30855, 30940, 31025, 31110, 31195, 31280, 31365, 31450, 31535, 31620, 31705, 31790, 31875, 31960, 32045, 32130, 32215, 32300, 32385, 32470, 32555, 32640, 32725, 32810, 32895, 32980, 33065, 33150, 33235, 33320, 33405, 33490, 33575, 33660, 33745, 33830, 33915, 34000, 34085, 34170, 34255, 34340, 34425, 34510, 34595, 34680, 34765, 34850, 34935, 35020, 35105, 35190, 35275, 35360, 35445, 35530, 35615, 35700, 35785, 35870, 35955, 36040, 36125, 36210, 36295, 36380, 36465, 36550, 36635, 36720, 36805, 36890, 36975, 37060, 37145, 37230, 37315, 37400, 37485, 37570, 37655, 37740, 37825, 37910, 37995, 38080, 38165, 38250, 38335, 38420, 38505, 38590, 38675, 38760, 38845, 38930, 39015, 39100, 39185, 39270, 39355, 39440, 39525, 39610, 39695, 39780, 39865, 39950, 40035, 40120, 40205, 40290, 40375, 40460, 40545, 40630, 40715, 40800, 40885, 40970, 41055, 41140, 41225, 41310, 41395, 41480, 41565, 41650, 41735, 41820, 41905, 41990, 42075, 42160, 42245, 42330, 42415, 42500, 42585, 42670, 42755, 42840, 42925, 43010, 43095, 43180, 43265, 43350, 43435, 43520, 43605, 43690, 43775, 43860, 43945, 44030, 44115, 44200, 44285, 44370, 44455, 44540, 44625, 44710, 44795, 44880, 44965, 45050, 45135, 45220, 45305, 45390, 45475, 45560, 45645, 45730, 45815, 45900, 45985, 46070, 46155, 46240, 46325, 46410, 46495, 46580, 46665, 46750, 46835, 46920, 47005, 47090, 47175, 47260, 47345, 47430, 47515, 47600, 47685, 47770, 47855, 47940, 48025, 48110, 48195, 48280, 48365, 48450, 48535, 48620, 48705, 48790, 48875, 48960, 49045, 49130, 49215, 49300, 49385, 49470, 49555, 49640, 49725, 49810, 49895, 49980, 50065, 50150, 50235, 50320, 50405, 50490, 50575, 50660, 50745, 50830, 50915, 51000, 51085, 51170, 51255, 51340, 51425, 51510, 51595, 51680, 51765, 51850, 51935, 52020, 52105, 52190, 52275, 52360, 52445, 52530, 52615, 52700, 52785, 52870, 52955, 53040, 53125, 53210, 53295, 53380, 53465, 53550, 53635, 53720, 53805, 53890, 53975, 54060, 54145, 54230, 54315, 54400, 54485, 54570, 54655, 54740, 54825, 54910, 54995, 55080, 55165, 55250, 55335, 55420, 55505, 55590, 55675, 55760, 55845, 55930, 56015, 56100, 56185, 56270, 56355, 56440, 56525, 56610, 56695, 56780, 56865, 56950, 57035, 57120, 57205, 57290, 57375, 57460, 57545, 57630, 57715, 57800, 57885, 57970, 58055, 58140, 58225, 58310, 58395, 58480, 58565, 58650, 58735, 58820, 58905, 58990, 59075, 59160, 59245, 59330, 59415, 59500, 59585, 59670, 59755, 59840, 59925, 60010, 60095, 60180, 60265, 60350, 60435, 60520, 60605, 60690, 60775, 60860, 60945, 61030, 61115, 61200, 61285, 61370, 61455, 61540, 61625, 61710, 61795, 61880, 61965, 62050, 62135, 62220, 62305, 62390, 62475, 62560, 62645, 62730, 62815, 62900, 62985, 63070, 63155, 63240, 63325, 63410, 63495, 63580, 63665, 63750, 63835, 63920, 64005, 64090, 64175, 64260, 64345, 64430, 64515, 64600, 64685, 64770, 64855, 64940, 65025, 65110, 65195, 65280, 65365, 65450, 65535, 65620, 65705, 65790, 65875, 65960, 66045, 66130, 66215, 66300, 66385, 66470, 66555, 66640, 66725, 66810, 66895, 66980, 67065, 67150, 67235, 67320, 67405, 67490, 67575, 67660, 67745, 67830, 67915, 68000, 68085, 68170, 68255, 68340, 68425, 68510, 68595, 68680, 68765, 68850, 68935, 69020, 69105, 69190, 69275, 69360, 69445, 69530, 69615, 69700, 69785, 69870, 69955, 70040, 70125, 70210, 70295, 70380, 70465, 70550, 70635, 70720, 70805, 70890, 70975, 71060, 71145, 71230, 71315, 71400, 71485, 71570, 71655, 71740, 71825, 71910, 71995, 72080, 72165, 72250, 72335, 72420, 72505, 72590, 72675, 72760, 72845, 72930, 73015, 73100, 73185, 73270, 73355, 73440, 73525, 73610, 73695, 73780, 73865, 73950, 74035, 74120, 74205, 74290, 74375, 74460, 74545, 74630, 74715, 74800, 74885, 74970, 75055, 75140, 75225, 75310, 75395, 75480, 75565, 75650, 75735, 75820, 75905, 75990, 76075, 76160, 76245, 76330, 76415, 76500, 76585, 76670, 76755, 76840, 76925, 77010, 77095, 77180, 77265, 77350, 77435, 77520, 77605, 77690, 77775, 77860, 77945, 78030, 78115, 78200, 78285, 78370, 78455, 78540, 78625, 78710, 78795, 78880, 78965, 79050, 79135, 79220, 79305, 79390, 79475, 79560, 79645, 79730, 79815, 79900, 79985, 80070, 80155, 80240, 80325, 80410, 80495, 80580, 80665, 80750, 80835, 80920, 81005, 81090, 81175, 81260, 81345, 81430, 81515, 81600, 81685, 81770, 81855, 81940, 82025, 82110, 82195, 82280, 82365, 82450, 82535, 82620, 82705, 82790, 82875, 82960, 83045, 83130, 83215, 83300, 83385, 83470, 83555, 83640, 83725, 83810, 83895, 83980, 84065, 84150, 84235, 84320, 84405, 84490, 84575, 84660, 84745, 84830, 84915, 85000, 85085, 85170, 85255, 85340, 85425, 85510, 85595, 85680, 85765, 85850, 85935, 86020, 86105, 86190, 86275, 86360, 86445, 86530, 86615, 86700, 86785, 86870, 86955, 87040, 87125, 87210, 87295, 87380, 87465, 87550, 87635, 87720, 87805, 87890, 87975, 88060, 88145, 88230, 88315, 88400, 88485, 88570, 88655, 88740, 88825, 88910, 88995, 89080, 89165, 89250, 89335, 89420, 89505, 89590, 89675, 89760, 89845, 89930, 90015, 90100, 90185, 90270, 90355, 90440, 90525, 90610, 90695, 90780, 90865, 90950, 91035, 91120, 91205, 91290, 91375, 91460, 91545, 91630, 91715, 91800, 91885, 91970, 92055, 92140, 92225, 92310, 92395, 92480, 92565, 92650, 92735, 92820, 92905, 92990, 93075, 93160, 93245, 93330, 93415, 93500, 93585, 93670, 93755, 93840, 93925, 94010, 94095, 94180, 94265, 94350, 94435, 94520, 94605, 94690, 94775, 94860, 94945, 95030, 95115, 95200, 95285, 95370, 95455, 95540, 95625, 95710, 95795, 95880, 95965, 96050, 96135, 96220, 96305, 96390, 96475, 96560, 96645, 96730, 96815, 96900, 96985, 97070, 97155, 97240, 97325, 97410, 97495, 97580, 97665, 97750, 97835, 97920, 98005, 98090, 98175, 98260, 98345, 98430, 98515, 98600, 98685, 98770, 98855, 98940, 99025, 99110, 99195, 99280, 99365, 99450, 99535, 99620, 99705, 99790, 99875, 99960
- There is a total of 1176 numbers (up to 100000) that are divisible by 85.
- The sum of these numbers is 58826460.
- The arithmetic mean of these numbers is 50022.5.
How to find the numbers divisible by 85?
Finding all the numbers that can be divided by 85 is essentially the same as searching for the multiples of 85: if a number N is a multiple of 85, then 85 is a divisor of N.
Indeed, if we assume that N is a multiple of 85, this means there exists an integer k such that:
Conversely, the result of N divided by 85 is this same integer k (without any remainder):
From this we can see that, theoretically, there's an infinite quantity of multiples of 85 (we can keep multiplying it by increasingly larger integers, without ever reaching the end).
However, in this instance, we've chosen to set an arbitrary limit (specifically, the multiples of 85 less than 100000):
- 1 × 85 = 85
- 2 × 85 = 170
- 3 × 85 = 255
- ...
- 1175 × 85 = 99875
- 1176 × 85 = 99960