28557891

素因数分解:

$3^2\times {\mathrm{43}}^1\times {\mathrm{109}}^1\times {\mathrm{677}}^1$

素因数の和:835

約数の個数: 24

約数和(自身を含む): 42659760

約数和(自身を除く): 14101869

約数列:

[1, 3, 9, 43, 109, 129, 327, 387, 677, 981, 2031, 4687, 6093, 14061, 29111, 42183, 73793, 87333, 221379, 261999, 664137, 3173099, 9519297, 28557891]

約数ペア:

[(1, 28557891), (3, 9519297), (9, 3173099), (43, 664137), (109, 261999), (129, 221379), (327, 87333), (387, 73793), (677, 42183), (981, 29111), (2031, 14061), (4687, 6093)]