1626740

素因数分解:

$2^2\times 5^1\times {\mathrm{163}}^1\times {\mathrm{499}}^1$

素因数の和:671

約数の個数: 24

約数和(自身を含む): 3444000

約数和(自身を除く): 1817260

約数列:

[1, 2, 4, 5, 10, 20, 163, 326, 499, 652, 815, 998, 1630, 1996, 2495, 3260, 4990, 9980, 81337, 162674, 325348, 406685, 813370, 1626740]

約数ペア:

[(1, 1626740), (2, 813370), (4, 406685), (5, 325348), (10, 162674), (20, 81337), (163, 9980), (326, 4990), (499, 3260), (652, 2495), (815, 1996), (998, 1630)]