16640404

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{34381}}^1$

素因数の和:34407

約数の個数: 18

約数和(自身を含む): 32009642

約数和(自身を除く): 15369238

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 34381, 68762, 137524, 378191, 756382, 1512764, 4160101, 8320202, 16640404]

約数ペア:

[(1, 16640404), (2, 8320202), (4, 4160101), (11, 1512764), (22, 756382), (44, 378191), (121, 137524), (242, 68762), (484, 34381)]