18911854

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{42787}}^1$

素因数の和:42819

約数の個数: 16

約数和(自身を含む): 32347728

約数和(自身を除く): 13435874

約数列:

[1, 2, 13, 17, 26, 34, 221, 442, 42787, 85574, 556231, 727379, 1112462, 1454758, 9455927, 18911854]

約数ペア:

[(1, 18911854), (2, 9455927), (13, 1454758), (17, 1112462), (26, 727379), (34, 556231), (221, 85574), (442, 42787)]