20010781

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{3499}}^1$

素因数の和:3568

約数の個数: 16

約数和(自身を含む): 24640000

約数和(自身を除く): 4629219

約数列:

[1, 7, 19, 43, 133, 301, 817, 3499, 5719, 24493, 66481, 150457, 465367, 1053199, 2858683, 20010781]

約数ペア:

[(1, 20010781), (7, 2858683), (19, 1053199), (43, 465367), (133, 150457), (301, 66481), (817, 24493), (3499, 5719)]