289736080

素因数分解:

$2^4\times 5^1\times {\mathrm{3621701}}^1$

素因数の和:3621714

約数の個数: 20

約数和(自身を含む): 673636572

約数和(自身を除く): 383900492

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 3621701, 7243402, 14486804, 18108505, 28973608, 36217010, 57947216, 72434020, 144868040, 289736080]

約数ペア:

[(1, 289736080), (2, 144868040), (4, 72434020), (5, 57947216), (8, 36217010), (10, 28973608), (16, 18108505), (20, 14486804), (40, 7243402), (80, 3621701)]