20939387

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{313}}^1\times {\mathrm{503}}^1$

素因数の和:842

約数の個数: 16

約数和(自身を含む): 25320960

約数和(自身を除く): 4381573

約数列:

[1, 7, 19, 133, 313, 503, 2191, 3521, 5947, 9557, 41629, 66899, 157439, 1102073, 2991341, 20939387]

約数ペア:

[(1, 20939387), (7, 2991341), (19, 1102073), (133, 157439), (313, 66899), (503, 41629), (2191, 9557), (3521, 5947)]