21912261

素因数分解:

$3^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{6481}}^1$

素因数の和:6521

約数の個数: 24

約数和(自身を含む): 35469504

約数和(自身を除く): 13557243

約数列:

[1, 3, 7, 21, 23, 49, 69, 147, 161, 483, 1127, 3381, 6481, 19443, 45367, 136101, 149063, 317569, 447189, 952707, 1043441, 3130323, 7304087, 21912261]

約数ペア:

[(1, 21912261), (3, 7304087), (7, 3130323), (21, 1043441), (23, 952707), (49, 447189), (69, 317569), (147, 149063), (161, 136101), (483, 45367), (1127, 19443), (3381, 6481)]