19907404

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{41131}}^1$

素因数の和:41157

約数の個数: 18

約数和(自身を含む): 38293892

約数和(自身を除く): 18386488

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 41131, 82262, 164524, 452441, 904882, 1809764, 4976851, 9953702, 19907404]

約数ペア:

[(1, 19907404), (2, 9953702), (4, 4976851), (11, 1809764), (22, 904882), (44, 452441), (121, 164524), (242, 82262), (484, 41131)]