21068729

素因数分解:

${\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{1847}}^1$

素因数の和:1936

約数の個数: 16

約数和(自身を含む): 24748416

約数和(自身を除く): 3679687

約数列:

[1, 11, 17, 61, 187, 671, 1037, 1847, 11407, 20317, 31399, 112667, 345389, 1239337, 1915339, 21068729]

約数ペア:

[(1, 21068729), (11, 1915339), (17, 1239337), (61, 345389), (187, 112667), (671, 31399), (1037, 20317), (1847, 11407)]