20741889

素因数分解:

$3^1\times 7^1\times {\mathrm{701}}^1\times {\mathrm{1409}}^1$

素因数の和:2120

約数の個数: 16

約数和(自身を含む): 31674240

約数和(自身を除く): 10932351

約数列:

[1, 3, 7, 21, 701, 1409, 2103, 4227, 4907, 9863, 14721, 29589, 987709, 2963127, 6913963, 20741889]

約数ペア:

[(1, 20741889), (3, 6913963), (7, 2963127), (21, 987709), (701, 29589), (1409, 14721), (2103, 9863), (4227, 4907)]