1328021260

素因数分解:

$2^2\times 5^1\times {\mathrm{66401063}}^1$

素因数の和:66401072

約数の個数: 12

約数和(自身を含む): 2788844688

約数和(自身を除く): 1460823428

約数列:

[1, 2, 4, 5, 10, 20, 66401063, 132802126, 265604252, 332005315, 664010630, 1328021260]

約数ペア:

[(1, 1328021260), (2, 664010630), (4, 332005315), (5, 265604252), (10, 132802126), (20, 66401063)]