20519018

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{11779}}^1$

素因数の和:11861

約数の個数: 16

約数和(自身を含む): 33643680

約数和(自身を除く): 13124662

約数列:

[1, 2, 13, 26, 67, 134, 871, 1742, 11779, 23558, 153127, 306254, 789193, 1578386, 10259509, 20519018]

約数ペア:

[(1, 20519018), (2, 10259509), (13, 1578386), (26, 789193), (67, 306254), (134, 153127), (871, 23558), (1742, 11779)]