19974800

素因数分解:

$2^4\times 5^2\times {\mathrm{49937}}^1$

素因数の和:49955

約数の個数: 30

約数和(自身を含む): 47990418

約数和(自身を除く): 28015618

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 49937, 99874, 199748, 249685, 399496, 499370, 798992, 998740, 1248425, 1997480, 2496850, 3994960, 4993700, 9987400, 19974800]

約数ペア:

[(1, 19974800), (2, 9987400), (4, 4993700), (5, 3994960), (8, 2496850), (10, 1997480), (16, 1248425), (20, 998740), (25, 798992), (40, 499370), (50, 399496), (80, 249685), (100, 199748), (200, 99874), (400, 49937)]