28228557

素因数分解:

$3^1\times 7^4\times {\mathrm{3919}}^1$

素因数の和:3950

約数の個数: 20

約数和(自身を含む): 43919680

約数和(自身を除く): 15691123

約数列:

[1, 3, 7, 21, 49, 147, 343, 1029, 2401, 3919, 7203, 11757, 27433, 82299, 192031, 576093, 1344217, 4032651, 9409519, 28228557]

約数ペア:

[(1, 28228557), (3, 9409519), (7, 4032651), (21, 1344217), (49, 576093), (147, 192031), (343, 82299), (1029, 27433), (2401, 11757), (3919, 7203)]