19903700

素因数分解:

$2^2\times 5^2\times {\mathrm{199037}}^1$

素因数の和:199051

約数の個数: 18

約数和(自身を含む): 43191246

約数和(自身を除く): 23287546

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 199037, 398074, 796148, 995185, 1990370, 3980740, 4975925, 9951850, 19903700]

約数ペア:

[(1, 19903700), (2, 9951850), (4, 4975925), (5, 3980740), (10, 1990370), (20, 995185), (25, 796148), (50, 398074), (100, 199037)]