1320221380

素因数分解:

$2^2\times 5^1\times {\mathrm{66011069}}^1$

素因数の和:66011078

約数の個数: 12

約数和(自身を含む): 2772464940

約数和(自身を除く): 1452243560

約数列:

[1, 2, 4, 5, 10, 20, 66011069, 132022138, 264044276, 330055345, 660110690, 1320221380]

約数ペア:

[(1, 1320221380), (2, 660110690), (4, 330055345), (5, 264044276), (10, 132022138), (20, 66011069)]