1320213140

素因数分解:

$2^2\times 5^1\times {\mathrm{66010657}}^1$

素因数の和:66010666

約数の個数: 12

約数和(自身を含む): 2772447636

約数和(自身を除く): 1452234496

約数列:

[1, 2, 4, 5, 10, 20, 66010657, 132021314, 264042628, 330053285, 660106570, 1320213140]

約数ペア:

[(1, 1320213140), (2, 660106570), (4, 330053285), (5, 264042628), (10, 132021314), (20, 66010657)]