64992280

素因数分解:

$2^3\times 5^1\times {\mathrm{1624807}}^1$

素因数の和:1624818

約数の個数: 16

約数和(自身を含む): 146232720

約数和(自身を除く): 81240440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1624807, 3249614, 6499228, 8124035, 12998456, 16248070, 32496140, 64992280]

約数ペア:

[(1, 64992280), (2, 32496140), (4, 16248070), (5, 12998456), (8, 8124035), (10, 6499228), (20, 3249614), (40, 1624807)]