21907820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{99581}}^1$

素因数の和:99601

約数の個数: 24

約数和(自身を含む): 50189328

約数和(自身を除く): 28281508

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 99581, 199162, 398324, 497905, 995810, 1095391, 1991620, 2190782, 4381564, 5476955, 10953910, 21907820]

約数ペア:

[(1, 21907820), (2, 10953910), (4, 5476955), (5, 4381564), (10, 2190782), (11, 1991620), (20, 1095391), (22, 995810), (44, 497905), (55, 398324), (110, 199162), (220, 99581)]