18991881

素因数分解:

$3^3\times {\mathrm{677}}^1\times {\mathrm{1039}}^1$

素因数の和:1725

約数の個数: 16

約数和(自身を含む): 28204800

約数和(自身を除く): 9212919

約数列:

[1, 3, 9, 27, 677, 1039, 2031, 3117, 6093, 9351, 18279, 28053, 703403, 2110209, 6330627, 18991881]

約数ペア:

[(1, 18991881), (3, 6330627), (9, 2110209), (27, 703403), (677, 28053), (1039, 18279), (2031, 9351), (3117, 6093)]