64267640

素因数分解:

$2^3\times 5^1\times {\mathrm{163}}^1\times {\mathrm{9857}}^1$

素因数の和:10031

約数の個数: 32

約数和(自身を含む): 145504080

約数和(自身を除く): 81236440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 163, 326, 652, 815, 1304, 1630, 3260, 6520, 9857, 19714, 39428, 49285, 78856, 98570, 197140, 394280, 1606691, 3213382, 6426764, 8033455, 12853528, 16066910, 32133820, 64267640]

約数ペア:

[(1, 64267640), (2, 32133820), (4, 16066910), (5, 12853528), (8, 8033455), (10, 6426764), (20, 3213382), (40, 1606691), (163, 394280), (326, 197140), (652, 98570), (815, 78856), (1304, 49285), (1630, 39428), (3260, 19714), (6520, 9857)]