20913753

素因数分解:

$3^1\times 7^1\times {\mathrm{839}}^1\times {\mathrm{1187}}^1$

素因数の和:2036

約数の個数: 16

約数和(自身を含む): 31933440

約数和(自身を除く): 11019687

約数列:

[1, 3, 7, 21, 839, 1187, 2517, 3561, 5873, 8309, 17619, 24927, 995893, 2987679, 6971251, 20913753]

約数ペア:

[(1, 20913753), (3, 6971251), (7, 2987679), (21, 995893), (839, 24927), (1187, 17619), (2517, 8309), (3561, 5873)]