80991897

素因数分解:

$3^1\times 7^1\times {\mathrm{53}}^2\times {\mathrm{1373}}^1$

素因数の和:1489

約数の個数: 24

約数和(自身を含む): 125880384

約数和(自身を除く): 44888487

約数列:

[1, 3, 7, 21, 53, 159, 371, 1113, 1373, 2809, 4119, 8427, 9611, 19663, 28833, 58989, 72769, 218307, 509383, 1528149, 3856757, 11570271, 26997299, 80991897]

約数ペア:

[(1, 80991897), (3, 26997299), (7, 11570271), (21, 3856757), (53, 1528149), (159, 509383), (371, 218307), (1113, 72769), (1373, 58989), (2809, 28833), (4119, 19663), (8427, 9611)]