129125020

素因数分解:

$2^2\times 5^1\times {\mathrm{313}}^1\times {\mathrm{20627}}^1$

素因数の和:20949

約数の個数: 24

約数和(自身を含む): 272042064

約数和(自身を除く): 142917044

約数列:

[1, 2, 4, 5, 10, 20, 313, 626, 1252, 1565, 3130, 6260, 20627, 41254, 82508, 103135, 206270, 412540, 6456251, 12912502, 25825004, 32281255, 64562510, 129125020]

約数ペア:

[(1, 129125020), (2, 64562510), (4, 32281255), (5, 25825004), (10, 12912502), (20, 6456251), (313, 412540), (626, 206270), (1252, 103135), (1565, 82508), (3130, 41254), (6260, 20627)]