21395129

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{7817}}^1$

素因数の和:7864

約数の個数: 16

約数和(自身を含む): 27019008

約数和(自身を除く): 5623879

約数列:

[1, 7, 17, 23, 119, 161, 391, 2737, 7817, 54719, 132889, 179791, 930223, 1258537, 3056447, 21395129]

約数ペア:

[(1, 21395129), (7, 3056447), (17, 1258537), (23, 930223), (119, 179791), (161, 132889), (391, 54719), (2737, 7817)]