20988040

素因数分解:

$2^3\times 5^1\times {\mathrm{524701}}^1$

素因数の和:524712

約数の個数: 16

約数和(自身を含む): 47223180

約数和(自身を除く): 26235140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 524701, 1049402, 2098804, 2623505, 4197608, 5247010, 10494020, 20988040]

約数ペア:

[(1, 20988040), (2, 10494020), (4, 5247010), (5, 4197608), (8, 2623505), (10, 2098804), (20, 1049402), (40, 524701)]