21103731

素因数分解:

$3^2\times {\mathrm{11}}^2\times {\mathrm{19379}}^1$

素因数の和:19407

約数の個数: 18

約数和(自身を含む): 33508020

約数和(自身を除く): 12404289

約数列:

[1, 3, 9, 11, 33, 99, 121, 363, 1089, 19379, 58137, 174411, 213169, 639507, 1918521, 2344859, 7034577, 21103731]

約数ペア:

[(1, 21103731), (3, 7034577), (9, 2344859), (11, 1918521), (33, 639507), (99, 213169), (121, 174411), (363, 58137), (1089, 19379)]