31437640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{60457}}^1$

素因数の和:60481

約数の個数: 32

約数和(自身を含む): 76177080

約数和(自身を除く): 44739440

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 60457, 120914, 241828, 302285, 483656, 604570, 785941, 1209140, 1571882, 2418280, 3143764, 3929705, 6287528, 7859410, 15718820, 31437640]

約数ペア:

[(1, 31437640), (2, 15718820), (4, 7859410), (5, 6287528), (8, 3929705), (10, 3143764), (13, 2418280), (20, 1571882), (26, 1209140), (40, 785941), (52, 604570), (65, 483656), (104, 302285), (130, 241828), (260, 120914), (520, 60457)]