991389

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{2777}}^1$

素因数の和:2804

約数の個数: 16

約数和(自身を含む): 1600128

約数和(自身を除く): 608739

約数列:

[1, 3, 7, 17, 21, 51, 119, 357, 2777, 8331, 19439, 47209, 58317, 141627, 330463, 991389]

約数ペア:

[(1, 991389), (3, 330463), (7, 141627), (17, 58317), (21, 47209), (51, 19439), (119, 8331), (357, 2777)]