20100479984

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{449}}^1\times {\mathrm{1571}}^1$

素因数の和:2178

約数の個数: 80

約数和(自身を含む): 42367600800

約数和(自身を除く): 22267120816

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 137, 208, 274, 449, 548, 898, 1096, 1571, 1781, 1796, 2192, 3142, 3562, 3592, 5837, 6284, 7124, 7184, 11674, 12568, 14248, 20423, 23348, 25136, 28496, 40846, 46696, 61513, 81692, 93392, 123026, 163384, 215227, 246052, 326768, 430454, 492104, 705379, 799669, 860908, 984208, 1410758, 1599338, 1721816, 2797951, 2821516, 3198676, 3443632, 5595902, 5643032, 6397352, 9169927, 11191804, 11286064, 12794704, 18339854, 22383608, 36679708, 44767216, 73359416, 96636923, 146718832, 193273846, 386547692, 773095384, 1256279999, 1546190768, 2512559998, 5025119996, 10050239992, 20100479984]

約数ペア:

[(1, 20100479984), (2, 10050239992), (4, 5025119996), (8, 2512559998), (13, 1546190768), (16, 1256279999), (26, 773095384), (52, 386547692), (104, 193273846), (137, 146718832), (208, 96636923), (274, 73359416), (449, 44767216), (548, 36679708), (898, 22383608), (1096, 18339854), (1571, 12794704), (1781, 11286064), (1796, 11191804), (2192, 9169927), (3142, 6397352), (3562, 5643032), (3592, 5595902), (5837, 3443632), (6284, 3198676), (7124, 2821516), (7184, 2797951), (11674, 1721816), (12568, 1599338), (14248, 1410758), (20423, 984208), (23348, 860908), (25136, 799669), (28496, 705379), (40846, 492104), (46696, 430454), (61513, 326768), (81692, 246052), (93392, 215227), (123026, 163384)]