31129960

素因数分解:

$2^3\times 5^1\times {\mathrm{157}}^1\times {\mathrm{4957}}^1$

素因数の和:5125

約数の個数: 32

約数和(自身を含む): 70502760

約数和(自身を除く): 39372800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 157, 314, 628, 785, 1256, 1570, 3140, 4957, 6280, 9914, 19828, 24785, 39656, 49570, 99140, 198280, 778249, 1556498, 3112996, 3891245, 6225992, 7782490, 15564980, 31129960]

約数ペア:

[(1, 31129960), (2, 15564980), (4, 7782490), (5, 6225992), (8, 3891245), (10, 3112996), (20, 1556498), (40, 778249), (157, 198280), (314, 99140), (628, 49570), (785, 39656), (1256, 24785), (1570, 19828), (3140, 9914), (4957, 6280)]