20445016

素因数分解:

$2^3\times {\mathrm{17}}^2\times {\mathrm{37}}^1\times {\mathrm{239}}^1$

素因数の和:316

約数の個数: 48

約数和(自身を含む): 41997600

約数和(自身を除く): 21552584

約数列:

[1, 2, 4, 8, 17, 34, 37, 68, 74, 136, 148, 239, 289, 296, 478, 578, 629, 956, 1156, 1258, 1912, 2312, 2516, 4063, 5032, 8126, 8843, 10693, 16252, 17686, 21386, 32504, 35372, 42772, 69071, 70744, 85544, 138142, 150331, 276284, 300662, 552568, 601324, 1202648, 2555627, 5111254, 10222508, 20445016]

約数ペア:

[(1, 20445016), (2, 10222508), (4, 5111254), (8, 2555627), (17, 1202648), (34, 601324), (37, 552568), (68, 300662), (74, 276284), (136, 150331), (148, 138142), (239, 85544), (289, 70744), (296, 69071), (478, 42772), (578, 35372), (629, 32504), (956, 21386), (1156, 17686), (1258, 16252), (1912, 10693), (2312, 8843), (2516, 8126), (4063, 5032)]