21061431

素因数分解:

$3^3\times {\mathrm{31}}^1\times {\mathrm{25163}}^1$

素因数の和:25203

約数の個数: 16

約数和(自身を含む): 32209920

約数和(自身を除く): 11148489

約数列:

[1, 3, 9, 27, 31, 93, 279, 837, 25163, 75489, 226467, 679401, 780053, 2340159, 7020477, 21061431]

約数ペア:

[(1, 21061431), (3, 7020477), (9, 2340159), (27, 780053), (31, 679401), (93, 226467), (279, 75489), (837, 25163)]