21672217

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{3467}}^1$

素因数の和:3540

約数の個数: 16

約数和(自身を含む): 26634240

約数和(自身を除く): 4962023

約数列:

[1, 7, 19, 47, 133, 329, 893, 3467, 6251, 24269, 65873, 162949, 461111, 1140643, 3096031, 21672217]

約数ペア:

[(1, 21672217), (7, 3096031), (19, 1140643), (47, 461111), (133, 162949), (329, 65873), (893, 24269), (3467, 6251)]