19982800

素因数分解:

$2^4\times 5^2\times {\mathrm{49957}}^1$

素因数の和:49975

約数の個数: 30

約数和(自身を含む): 48009638

約数和(自身を除く): 28026838

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 49957, 99914, 199828, 249785, 399656, 499570, 799312, 999140, 1248925, 1998280, 2497850, 3996560, 4995700, 9991400, 19982800]

約数ペア:

[(1, 19982800), (2, 9991400), (4, 4995700), (5, 3996560), (8, 2497850), (10, 1998280), (16, 1248925), (20, 999140), (25, 799312), (40, 499570), (50, 399656), (80, 249785), (100, 199828), (200, 99914), (400, 49957)]