20037820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{91081}}^1$

素因数の和:91101

約数の個数: 24

約数和(自身を含む): 45905328

約数和(自身を除く): 25867508

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 91081, 182162, 364324, 455405, 910810, 1001891, 1821620, 2003782, 4007564, 5009455, 10018910, 20037820]

約数ペア:

[(1, 20037820), (2, 10018910), (4, 5009455), (5, 4007564), (10, 2003782), (11, 1821620), (20, 1001891), (22, 910810), (44, 455405), (55, 364324), (110, 182162), (220, 91081)]