204057820

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{248851}}^1$

素因数の和:248901

約数の個数: 24

約数和(自身を含む): 438974928

約数和(自身を除く): 234917108

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 248851, 497702, 995404, 1244255, 2488510, 4977020, 10202891, 20405782, 40811564, 51014455, 102028910, 204057820]

約数ペア:

[(1, 204057820), (2, 102028910), (4, 51014455), (5, 40811564), (10, 20405782), (20, 10202891), (41, 4977020), (82, 2488510), (164, 1244255), (205, 995404), (410, 497702), (820, 248851)]