21820267

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{2287}}^1$

素因数の和:2370

約数の個数: 16

約数和(自身を含む): 26357760

約数和(自身を除く): 4537493

約数列:

[1, 7, 29, 47, 203, 329, 1363, 2287, 9541, 16009, 66323, 107489, 464261, 752423, 3117181, 21820267]

約数ペア:

[(1, 21820267), (7, 3117181), (29, 752423), (47, 464261), (203, 107489), (329, 66323), (1363, 16009), (2287, 9541)]