31212560

素因数分解:

$2^4\times 5^1\times {\mathrm{390157}}^1$

素因数の和:390170

約数の個数: 20

約数和(自身を含む): 72569388

約数和(自身を除く): 41356828

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 390157, 780314, 1560628, 1950785, 3121256, 3901570, 6242512, 7803140, 15606280, 31212560]

約数ペア:

[(1, 31212560), (2, 15606280), (4, 7803140), (5, 6242512), (8, 3901570), (10, 3121256), (16, 1950785), (20, 1560628), (40, 780314), (80, 390157)]