20641760

素因数分解:

$2^5\times 5^1\times {\mathrm{129011}}^1$

素因数の和:129026

約数の個数: 24

約数和(自身を含む): 48766536

約数和(自身を除く): 28124776

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 129011, 258022, 516044, 645055, 1032088, 1290110, 2064176, 2580220, 4128352, 5160440, 10320880, 20641760]

約数ペア:

[(1, 20641760), (2, 10320880), (4, 5160440), (5, 4128352), (8, 2580220), (10, 2064176), (16, 1290110), (20, 1032088), (32, 645055), (40, 516044), (80, 258022), (160, 129011)]