18640959980

素因数分解:

$2^2\times 5^1\times {\mathrm{932047999}}^1$

素因数の和:932048008

約数の個数: 12

約数和(自身を含む): 39146016000

約数和(自身を除く): 20505056020

約数列:

[1, 2, 4, 5, 10, 20, 932047999, 1864095998, 3728191996, 4660239995, 9320479990, 18640959980]

約数ペア:

[(1, 18640959980), (2, 9320479990), (4, 4660239995), (5, 3728191996), (10, 1864095998), (20, 932047999)]