19814800

素因数分解:

$2^4\times 5^2\times {\mathrm{49537}}^1$

素因数の和:49555

約数の個数: 30

約数和(自身を含む): 47606018

約数和(自身を除く): 27791218

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 49537, 99074, 198148, 247685, 396296, 495370, 792592, 990740, 1238425, 1981480, 2476850, 3962960, 4953700, 9907400, 19814800]

約数ペア:

[(1, 19814800), (2, 9907400), (4, 4953700), (5, 3962960), (8, 2476850), (10, 1981480), (16, 1238425), (20, 990740), (25, 792592), (40, 495370), (50, 396296), (80, 247685), (100, 198148), (200, 99074), (400, 49537)]