15997779

素因数分解:

$3^2\times 7^1\times {\mathrm{197}}^1\times {\mathrm{1289}}^1$

素因数の和:1499

約数の個数: 24

約数和(自身を含む): 26563680

約数和(自身を除く): 10565901

約数列:

[1, 3, 7, 9, 21, 63, 197, 591, 1289, 1379, 1773, 3867, 4137, 9023, 11601, 12411, 27069, 81207, 253933, 761799, 1777531, 2285397, 5332593, 15997779]

約数ペア:

[(1, 15997779), (3, 5332593), (7, 2285397), (9, 1777531), (21, 761799), (63, 253933), (197, 81207), (591, 27069), (1289, 12411), (1379, 11601), (1773, 9023), (3867, 4137)]