13257181

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{199}}^1\times {\mathrm{307}}^1$

素因数の和:544

約数の個数: 16

約数和(自身を含む): 15769600

約数和(自身を除く): 2512419

約数列:

[1, 7, 31, 199, 217, 307, 1393, 2149, 6169, 9517, 43183, 61093, 66619, 427651, 1893883, 13257181]

約数ペア:

[(1, 13257181), (7, 1893883), (31, 427651), (199, 66619), (217, 61093), (307, 43183), (1393, 9517), (2149, 6169)]