64291160

素因数分解:

$2^3\times 5^1\times {\mathrm{499}}^1\times {\mathrm{3221}}^1$

素因数の和:3731

約数の個数: 32

約数和(自身を含む): 144990000

約数和(自身を除く): 80698840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 499, 998, 1996, 2495, 3221, 3992, 4990, 6442, 9980, 12884, 16105, 19960, 25768, 32210, 64420, 128840, 1607279, 3214558, 6429116, 8036395, 12858232, 16072790, 32145580, 64291160]

約数ペア:

[(1, 64291160), (2, 32145580), (4, 16072790), (5, 12858232), (8, 8036395), (10, 6429116), (20, 3214558), (40, 1607279), (499, 128840), (998, 64420), (1996, 32210), (2495, 25768), (3221, 19960), (3992, 16105), (4990, 12884), (6442, 9980)]