19999250

素因数分解:

$2^1\times 5^3\times {\mathrm{79997}}^1$

素因数の和:80014

約数の個数: 16

約数和(自身を含む): 37439064

約数和(自身を除く): 17439814

約数列:

[1, 2, 5, 10, 25, 50, 125, 250, 79997, 159994, 399985, 799970, 1999925, 3999850, 9999625, 19999250]

約数ペア:

[(1, 19999250), (2, 9999625), (5, 3999850), (10, 1999925), (25, 799970), (50, 399985), (125, 159994), (250, 79997)]