21717241

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{331}}^1$

素因数の和:461

約数の個数: 24

約数和(自身を含む): 27553344

約数和(自身を除く): 5836103

約数列:

[1, 7, 13, 49, 91, 103, 331, 637, 721, 1339, 2317, 4303, 5047, 9373, 16219, 30121, 34093, 65611, 210847, 238651, 443209, 1670557, 3102463, 21717241]

約数ペア:

[(1, 21717241), (7, 3102463), (13, 1670557), (49, 443209), (91, 238651), (103, 210847), (331, 65611), (637, 34093), (721, 30121), (1339, 16219), (2317, 9373), (4303, 5047)]