19990322480

素因数分解:

$2^4\times 5^1\times {\mathrm{249879031}}^1$

素因数の和:249879044

約数の個数: 20

約数和(自身を含む): 46477499952

約数和(自身を除く): 26487177472

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 249879031, 499758062, 999516124, 1249395155, 1999032248, 2498790310, 3998064496, 4997580620, 9995161240, 19990322480]

約数ペア:

[(1, 19990322480), (2, 9995161240), (4, 4997580620), (5, 3998064496), (8, 2498790310), (10, 1999032248), (16, 1249395155), (20, 999516124), (40, 499758062), (80, 249879031)]