20187867

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{23447}}^1$

素因数の和:23498

約数の個数: 16

約数和(自身を含む): 31514112

約数和(自身を除く): 11326245

約数列:

[1, 3, 7, 21, 41, 123, 287, 861, 23447, 70341, 164129, 492387, 961327, 2883981, 6729289, 20187867]

約数ペア:

[(1, 20187867), (3, 6729289), (7, 2883981), (21, 961327), (41, 492387), (123, 164129), (287, 70341), (861, 23447)]