21103579

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{4793}}^1$

素因数の和:4854

約数の個数: 16

約数和(自身を含む): 26232768

約数和(自身を除く): 5129189

約数列:

[1, 7, 17, 37, 119, 259, 629, 4403, 4793, 33551, 81481, 177341, 570367, 1241387, 3014797, 21103579]

約数ペア:

[(1, 21103579), (7, 3014797), (17, 1241387), (37, 570367), (119, 177341), (259, 81481), (629, 33551), (4403, 4793)]