20204680

素因数分解:

$2^3\times 5^1\times {\mathrm{505117}}^1$

素因数の和:505128

約数の個数: 16

約数和(自身を含む): 45460620

約数和(自身を除く): 25255940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 505117, 1010234, 2020468, 2525585, 4040936, 5051170, 10102340, 20204680]

約数ペア:

[(1, 20204680), (2, 10102340), (4, 5051170), (5, 4040936), (8, 2525585), (10, 2020468), (20, 1010234), (40, 505117)]