18698239

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{199}}^1\times {\mathrm{433}}^1$

素因数の和:670

約数の個数: 16

約数和(自身を含む): 22220800

約数和(自身を除く): 3522561

約数列:

[1, 7, 31, 199, 217, 433, 1393, 3031, 6169, 13423, 43183, 86167, 93961, 603169, 2671177, 18698239]

約数ペア:

[(1, 18698239), (7, 2671177), (31, 603169), (199, 93961), (217, 86167), (433, 43183), (1393, 13423), (3031, 6169)]