21291259

素因数分解:

${\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{2777}}^1$

素因数の和:2846

約数の個数: 16

約数和(自身を含む): 25202016

約数和(自身を除く): 3910757

約数列:

[1, 11, 17, 41, 187, 451, 697, 2777, 7667, 30547, 47209, 113857, 519299, 1252427, 1935569, 21291259]

約数ペア:

[(1, 21291259), (11, 1935569), (17, 1252427), (41, 519299), (187, 113857), (451, 47209), (697, 30547), (2777, 7667)]