21279427

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{1319}}^1$

素因数の和:1422

約数の個数: 16

約数和(自身を含む): 24615360

約数和(自身を除く): 3335933

約数列:

[1, 13, 17, 73, 221, 949, 1241, 1319, 16133, 17147, 22423, 96287, 291499, 1251731, 1636879, 21279427]

約数ペア:

[(1, 21279427), (13, 1636879), (17, 1251731), (73, 291499), (221, 96287), (949, 22423), (1241, 17147), (1319, 16133)]