20810391

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{26783}}^1$

素因数の和:26830

約数の個数: 16

約数和(自身を含む): 32569344

約数和(自身を除く): 11758953

約数列:

[1, 3, 7, 21, 37, 111, 259, 777, 26783, 80349, 187481, 562443, 990971, 2972913, 6936797, 20810391]

約数ペア:

[(1, 20810391), (3, 6936797), (7, 2972913), (21, 990971), (37, 562443), (111, 187481), (259, 80349), (777, 26783)]