19665387

素因数分解:

$3^2\times 7^1\times {\mathrm{283}}^1\times {\mathrm{1103}}^1$

素因数の和:1399

約数の個数: 24

約数和(自身を含む): 32607744

約数和(自身を除く): 12942357

約数列:

[1, 3, 7, 9, 21, 63, 283, 849, 1103, 1981, 2547, 3309, 5943, 7721, 9927, 17829, 23163, 69489, 312149, 936447, 2185043, 2809341, 6555129, 19665387]

約数ペア:

[(1, 19665387), (3, 6555129), (7, 2809341), (9, 2185043), (21, 936447), (63, 312149), (283, 69489), (849, 23163), (1103, 17829), (1981, 9927), (2547, 7721), (3309, 5943)]