28720737

素因数分解:

$3^4\times {\mathrm{109}}^1\times {\mathrm{3253}}^1$

素因数の和:3374

約数の個数: 20

約数和(自身を含む): 43310740

約数和(自身を除く): 14590003

約数列:

[1, 3, 9, 27, 81, 109, 327, 981, 2943, 3253, 8829, 9759, 29277, 87831, 263493, 354577, 1063731, 3191193, 9573579, 28720737]

約数ペア:

[(1, 28720737), (3, 9573579), (9, 3191193), (27, 1063731), (81, 354577), (109, 263493), (327, 87831), (981, 29277), (2943, 9759), (3253, 8829)]