20722261

素因数分解:

$7^1\times {\mathrm{41}}^1\times {\mathrm{103}}^1\times {\mathrm{701}}^1$

素因数の和:852

約数の個数: 16

約数和(自身を含む): 24530688

約数和(自身を除く): 3808427

約数列:

[1, 7, 41, 103, 287, 701, 721, 4223, 4907, 28741, 29561, 72203, 201187, 505421, 2960323, 20722261]

約数ペア:

[(1, 20722261), (7, 2960323), (41, 505421), (103, 201187), (287, 72203), (701, 29561), (721, 28741), (4223, 4907)]