81365242

素因数分解:

$2^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{200407}}^1$

素因数の和:200445

約数の個数: 16

約数和(自身を含む): 144293760

約数和(自身を除く): 62928518

約数列:

[1, 2, 7, 14, 29, 58, 203, 406, 200407, 400814, 1402849, 2805698, 5811803, 11623606, 40682621, 81365242]

約数ペア:

[(1, 81365242), (2, 40682621), (7, 11623606), (14, 5811803), (29, 2805698), (58, 1402849), (203, 400814), (406, 200407)]