21987207

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{24677}}^1$

素因数の和:24700

約数の個数: 20

約数和(自身を含む): 35832456

約数和(自身を除く): 13845249

約数列:

[1, 3, 9, 11, 27, 33, 81, 99, 297, 891, 24677, 74031, 222093, 271447, 666279, 814341, 1998837, 2443023, 7329069, 21987207]

約数ペア:

[(1, 21987207), (3, 7329069), (9, 2443023), (11, 1998837), (27, 814341), (33, 666279), (81, 271447), (99, 222093), (297, 74031), (891, 24677)]