21627881

素因数分解:

${\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{151}}^1\times {\mathrm{449}}^1$

素因数の和:640

約数の個数: 16

約数和(自身を含む): 24624000

約数和(自身を除く): 2996119

約数列:

[1, 11, 29, 151, 319, 449, 1661, 4379, 4939, 13021, 48169, 67799, 143231, 745789, 1966171, 21627881]

約数ペア:

[(1, 21627881), (11, 1966171), (29, 745789), (151, 143231), (319, 67799), (449, 48169), (1661, 13021), (4379, 4939)]