21044259

素因数分解:

$3^3\times {\mathrm{101}}^1\times {\mathrm{7717}}^1$

素因数の和:7827

約数の個数: 16

約数和(自身を含む): 31489440

約数和(自身を除く): 10445181

約数列:

[1, 3, 9, 27, 101, 303, 909, 2727, 7717, 23151, 69453, 208359, 779417, 2338251, 7014753, 21044259]

約数ペア:

[(1, 21044259), (3, 7014753), (9, 2338251), (27, 779417), (101, 208359), (303, 69453), (909, 23151), (2727, 7717)]