19842500

素因数分解:

$2^2\times 5^4\times {\mathrm{7937}}^1$

素因数の和:7961

約数の個数: 30

約数和(自身を含む): 43397046

約数和(自身を除く): 23554546

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 250, 500, 625, 1250, 2500, 7937, 15874, 31748, 39685, 79370, 158740, 198425, 396850, 793700, 992125, 1984250, 3968500, 4960625, 9921250, 19842500]

約数ペア:

[(1, 19842500), (2, 9921250), (4, 4960625), (5, 3968500), (10, 1984250), (20, 992125), (25, 793700), (50, 396850), (100, 198425), (125, 158740), (250, 79370), (500, 39685), (625, 31748), (1250, 15874), (2500, 7937)]