64449620

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{103951}}^1$

素因数の和:103991

約数の個数: 24

約数和(自身を含む): 139711488

約数和(自身を除く): 75261868

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 103951, 207902, 415804, 519755, 1039510, 2079020, 3222481, 6444962, 12889924, 16112405, 32224810, 64449620]

約数ペア:

[(1, 64449620), (2, 32224810), (4, 16112405), (5, 12889924), (10, 6444962), (20, 3222481), (31, 2079020), (62, 1039510), (124, 519755), (155, 415804), (310, 207902), (620, 103951)]