4081820

素因数分解:

$2^2\times 5^1\times {\mathrm{409}}^1\times {\mathrm{499}}^1$

素因数の和:917

約数の個数: 24

約数和(自身を含む): 8610000

約数和(自身を除く): 4528180

約数列:

[1, 2, 4, 5, 10, 20, 409, 499, 818, 998, 1636, 1996, 2045, 2495, 4090, 4990, 8180, 9980, 204091, 408182, 816364, 1020455, 2040910, 4081820]

約数ペア:

[(1, 4081820), (2, 2040910), (4, 1020455), (5, 816364), (10, 408182), (20, 204091), (409, 9980), (499, 8180), (818, 4990), (998, 4090), (1636, 2495), (1996, 2045)]