20912567

素因数分解:

${\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{251}}^1$

素因数の和:323

約数の個数: 24

約数和(自身を含む): 24902640

約数和(自身を除く): 3990073

約数列:

[1, 13, 17, 29, 169, 221, 251, 377, 493, 2873, 3263, 4267, 4901, 6409, 7279, 42419, 55471, 83317, 94627, 123743, 721123, 1230151, 1608659, 20912567]

約数ペア:

[(1, 20912567), (13, 1608659), (17, 1230151), (29, 721123), (169, 123743), (221, 94627), (251, 83317), (377, 55471), (493, 42419), (2873, 7279), (3263, 6409), (4267, 4901)]