31630640

素因数分解:

$2^4\times 5^1\times {\mathrm{395383}}^1$

素因数の和:395396

約数の個数: 20

約数和(自身を含む): 73541424

約数和(自身を除く): 41910784

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 395383, 790766, 1581532, 1976915, 3163064, 3953830, 6326128, 7907660, 15815320, 31630640]

約数ペア:

[(1, 31630640), (2, 15815320), (4, 7907660), (5, 6326128), (8, 3953830), (10, 3163064), (16, 1976915), (20, 1581532), (40, 790766), (80, 395383)]