21359404

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{44131}}^1$

素因数の和:44157

約数の個数: 18

約数和(自身を含む): 41086892

約数和(自身を除く): 19727488

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 44131, 88262, 176524, 485441, 970882, 1941764, 5339851, 10679702, 21359404]

約数ペア:

[(1, 21359404), (2, 10679702), (4, 5339851), (11, 1941764), (22, 970882), (44, 485441), (121, 176524), (242, 88262), (484, 44131)]