21311297

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{107}}^1\times {\mathrm{769}}^1$

素因数の和:920

約数の個数: 16

約数和(自身を含む): 25280640

約数和(自身を除く): 3969343

約数列:

[1, 7, 37, 107, 259, 749, 769, 3959, 5383, 27713, 28453, 82283, 199171, 575981, 3044471, 21311297]

約数ペア:

[(1, 21311297), (7, 3044471), (37, 575981), (107, 199171), (259, 82283), (749, 28453), (769, 27713), (3959, 5383)]