19856080

素因数分解:

$2^4\times 5^1\times {\mathrm{248201}}^1$

素因数の和:248214

約数の個数: 20

約数和(自身を含む): 46165572

約数和(自身を除く): 26309492

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 248201, 496402, 992804, 1241005, 1985608, 2482010, 3971216, 4964020, 9928040, 19856080]

約数ペア:

[(1, 19856080), (2, 9928040), (4, 4964020), (5, 3971216), (8, 2482010), (10, 1985608), (16, 1241005), (20, 992804), (40, 496402), (80, 248201)]