2005307620

素因数分解:

$2^2\times 5^1\times {\mathrm{157}}^1\times {\mathrm{638633}}^1$

素因数の和:638799

約数の個数: 24

約数和(自身を含む): 4237975224

約数和(自身を除く): 2232667604

約数列:

[1, 2, 4, 5, 10, 20, 157, 314, 628, 785, 1570, 3140, 638633, 1277266, 2554532, 3193165, 6386330, 12772660, 100265381, 200530762, 401061524, 501326905, 1002653810, 2005307620]

約数ペア:

[(1, 2005307620), (2, 1002653810), (4, 501326905), (5, 401061524), (10, 200530762), (20, 100265381), (157, 12772660), (314, 6386330), (628, 3193165), (785, 2554532), (1570, 1277266), (3140, 638633)]