20328236481

素因数分解:

$3^1\times 7^2\times {\mathrm{443}}^1\times {\mathrm{312161}}^1$

素因数の和:312621

約数の個数: 24

約数和(自身を含む): 31600783584

約数和(自身を除く): 11272547103

約数列:

[1, 3, 7, 21, 49, 147, 443, 1329, 3101, 9303, 21707, 65121, 312161, 936483, 2185127, 6555381, 15295889, 45887667, 138287323, 414861969, 968011261, 2904033783, 6776078827, 20328236481]

約数ペア:

[(1, 20328236481), (3, 6776078827), (7, 2904033783), (21, 968011261), (49, 414861969), (147, 138287323), (443, 45887667), (1329, 15295889), (3101, 6555381), (9303, 2185127), (21707, 936483), (65121, 312161)]