21123156951

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{1279}}^1\times {\mathrm{141157}}^1$

素因数の和:142455

約数の個数: 24

約数和(自身を含む): 32884167680

約数和(自身を除く): 11761010729

約数列:

[1, 3, 9, 13, 39, 117, 1279, 3837, 11511, 16627, 49881, 141157, 149643, 423471, 1270413, 1835041, 5505123, 16515369, 180539803, 541619409, 1624858227, 2347017439, 7041052317, 21123156951]

約数ペア:

[(1, 21123156951), (3, 7041052317), (9, 2347017439), (13, 1624858227), (39, 541619409), (117, 180539803), (1279, 16515369), (3837, 5505123), (11511, 1835041), (16627, 1270413), (49881, 423471), (141157, 149643)]