21207439

素因数分解:

${\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{3499}}^1$

素因数の和:3558

約数の個数: 16

約数和(自身を含む): 25200000

約数和(自身を除く): 3992561

約数列:

[1, 11, 19, 29, 209, 319, 551, 3499, 6061, 38489, 66481, 101471, 731291, 1116181, 1927949, 21207439]

約数ペア:

[(1, 21207439), (11, 1927949), (19, 1116181), (29, 731291), (209, 101471), (319, 66481), (551, 38489), (3499, 6061)]