81296080

素因数分解:

$2^4\times 5^1\times {\mathrm{1016201}}^1$

素因数の和:1016214

約数の個数: 20

約数和(自身を含む): 189013572

約数和(自身を除く): 107717492

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1016201, 2032402, 4064804, 5081005, 8129608, 10162010, 16259216, 20324020, 40648040, 81296080]

約数ペア:

[(1, 81296080), (2, 40648040), (4, 20324020), (5, 16259216), (8, 10162010), (10, 8129608), (16, 5081005), (20, 4064804), (40, 2032402), (80, 1016201)]