64985080

素因数分解:

$2^3\times 5^1\times {\mathrm{1624627}}^1$

素因数の和:1624638

約数の個数: 16

約数和(自身を含む): 146216520

約数和(自身を除く): 81231440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1624627, 3249254, 6498508, 8123135, 12997016, 16246270, 32492540, 64985080]

約数ペア:

[(1, 64985080), (2, 32492540), (4, 16246270), (5, 12997016), (8, 8123135), (10, 6498508), (20, 3249254), (40, 1624627)]