19968500

素因数分解:

$2^2\times 5^3\times {\mathrm{39937}}^1$

素因数の和:39956

約数の個数: 24

約数和(自身を含む): 43612296

約数和(自身を除く): 23643796

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 250, 500, 39937, 79874, 159748, 199685, 399370, 798740, 998425, 1996850, 3993700, 4992125, 9984250, 19968500]

約数ペア:

[(1, 19968500), (2, 9984250), (4, 4992125), (5, 3993700), (10, 1996850), (20, 998425), (25, 798740), (50, 399370), (100, 199685), (125, 159748), (250, 79874), (500, 39937)]