1087820

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{499}}^1$

素因数の和:617

約数の個数: 24

約数和(自身を含む): 2310000

約数和(自身を除く): 1222180

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 499, 545, 998, 1090, 1996, 2180, 2495, 4990, 9980, 54391, 108782, 217564, 271955, 543910, 1087820]

約数ペア:

[(1, 1087820), (2, 543910), (4, 271955), (5, 217564), (10, 108782), (20, 54391), (109, 9980), (218, 4990), (436, 2495), (499, 2180), (545, 1996), (998, 1090)]