20215891000

素因数分解:

$2^3\times 5^3\times {\mathrm{43}}^1\times {\mathrm{229}}^1\times {\mathrm{2053}}^1$

素因数の和:2346

約数の個数: 128

約数和(自身を含む): 48640363200

約数和(自身を除く): 28424472200

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 43, 50, 86, 100, 125, 172, 200, 215, 229, 250, 344, 430, 458, 500, 860, 916, 1000, 1075, 1145, 1720, 1832, 2053, 2150, 2290, 4106, 4300, 4580, 5375, 5725, 8212, 8600, 9160, 9847, 10265, 10750, 11450, 16424, 19694, 20530, 21500, 22900, 28625, 39388, 41060, 43000, 45800, 49235, 51325, 57250, 78776, 82120, 88279, 98470, 102650, 114500, 176558, 196940, 205300, 229000, 246175, 256625, 353116, 393880, 410600, 441395, 470137, 492350, 513250, 706232, 882790, 940274, 984700, 1026500, 1230875, 1765580, 1880548, 1969400, 2053000, 2206975, 2350685, 2461750, 3531160, 3761096, 4413950, 4701370, 4923500, 8827900, 9402740, 9847000, 11034875, 11753425, 17655800, 18805480, 20215891, 22069750, 23506850, 40431782, 44139500, 47013700, 58767125, 80863564, 88279000, 94027400, 101079455, 117534250, 161727128, 202158910, 235068500, 404317820, 470137000, 505397275, 808635640, 1010794550, 2021589100, 2526986375, 4043178200, 5053972750, 10107945500, 20215891000]

約数ペア:

[(1, 20215891000), (2, 10107945500), (4, 5053972750), (5, 4043178200), (8, 2526986375), (10, 2021589100), (20, 1010794550), (25, 808635640), (40, 505397275), (43, 470137000), (50, 404317820), (86, 235068500), (100, 202158910), (125, 161727128), (172, 117534250), (200, 101079455), (215, 94027400), (229, 88279000), (250, 80863564), (344, 58767125), (430, 47013700), (458, 44139500), (500, 40431782), (860, 23506850), (916, 22069750), (1000, 20215891), (1075, 18805480), (1145, 17655800), (1720, 11753425), (1832, 11034875), (2053, 9847000), (2150, 9402740), (2290, 8827900), (4106, 4923500), (4300, 4701370), (4580, 4413950), (5375, 3761096), (5725, 3531160), (8212, 2461750), (8600, 2350685), (9160, 2206975), (9847, 2053000), (10265, 1969400), (10750, 1880548), (11450, 1765580), (16424, 1230875), (19694, 1026500), (20530, 984700), (21500, 940274), (22900, 882790), (28625, 706232), (39388, 513250), (41060, 492350), (43000, 470137), (45800, 441395), (49235, 410600), (51325, 393880), (57250, 353116), (78776, 256625), (82120, 246175), (88279, 229000), (98470, 205300), (102650, 196940), (114500, 176558)]