21747123

素因数分解:

$3^4\times {\mathrm{383}}^1\times {\mathrm{701}}^1$

素因数の和:1096

約数の個数: 20

約数和(自身を含む): 32617728

約数和(自身を除く): 10870605

約数列:

[1, 3, 9, 27, 81, 383, 701, 1149, 2103, 3447, 6309, 10341, 18927, 31023, 56781, 268483, 805449, 2416347, 7249041, 21747123]

約数ペア:

[(1, 21747123), (3, 7249041), (9, 2416347), (27, 805449), (81, 268483), (383, 56781), (701, 31023), (1149, 18927), (2103, 10341), (3447, 6309)]