21505222

素因数分解:

$2^1\times {\mathrm{79}}^1\times {\mathrm{131}}^1\times {\mathrm{1039}}^1$

素因数の和:1251

約数の個数: 16

約数和(自身を含む): 32947200

約数和(自身を除く): 11441978

約数列:

[1, 2, 79, 131, 158, 262, 1039, 2078, 10349, 20698, 82081, 136109, 164162, 272218, 10752611, 21505222]

約数ペア:

[(1, 21505222), (2, 10752611), (79, 272218), (131, 164162), (158, 136109), (262, 82081), (1039, 20698), (2078, 10349)]