20612991

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{42677}}^1$

素因数の和:42710

約数の個数: 16

約数和(自身を含む): 32776704

約数和(自身を除く): 12163713

約数列:

[1, 3, 7, 21, 23, 69, 161, 483, 42677, 128031, 298739, 896217, 981571, 2944713, 6870997, 20612991]

約数ペア:

[(1, 20612991), (3, 6870997), (7, 2944713), (21, 981571), (23, 896217), (69, 298739), (161, 128031), (483, 42677)]