21158577

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{23747}}^1$

素因数の和:23770

約数の個数: 20

約数和(自身を含む): 34482096

約数和(自身を除く): 13323519

約数列:

[1, 3, 9, 11, 27, 33, 81, 99, 297, 891, 23747, 71241, 213723, 261217, 641169, 783651, 1923507, 2350953, 7052859, 21158577]

約数ペア:

[(1, 21158577), (3, 7052859), (9, 2350953), (11, 1923507), (27, 783651), (33, 641169), (81, 261217), (99, 213723), (297, 71241), (891, 23747)]