21989838

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{281921}}^1$

素因数の和:281939

約数の個数: 16

約数和(自身を含む): 47362896

約数和(自身を除く): 25373058

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 281921, 563842, 845763, 1691526, 3664973, 7329946, 10994919, 21989838]

約数ペア:

[(1, 21989838), (2, 10994919), (3, 7329946), (6, 3664973), (13, 1691526), (26, 845763), (39, 563842), (78, 281921)]