21879400

素因数分解:

$2^3\times 5^2\times {\mathrm{109397}}^1$

素因数の和:109413

約数の個数: 24

約数和(自身を含む): 50870070

約数和(自身を除く): 28990670

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 109397, 218794, 437588, 546985, 875176, 1093970, 2187940, 2734925, 4375880, 5469850, 10939700, 21879400]

約数ペア:

[(1, 21879400), (2, 10939700), (4, 5469850), (5, 4375880), (8, 2734925), (10, 2187940), (20, 1093970), (25, 875176), (40, 546985), (50, 437588), (100, 218794), (200, 109397)]