20631387

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{57791}}^1$

素因数の和:57818

約数の個数: 16

約数和(自身を含む): 33288192

約数和(自身を除く): 12656805

約数列:

[1, 3, 7, 17, 21, 51, 119, 357, 57791, 173373, 404537, 982447, 1213611, 2947341, 6877129, 20631387]

約数ペア:

[(1, 20631387), (3, 6877129), (7, 2947341), (17, 1213611), (21, 982447), (51, 404537), (119, 173373), (357, 57791)]