The factorial of 8, denoted as $8!$, is the product of all positive integers from 1 to 8:

$8! = 8 \times 7 \times 6 \times 5 \times 4 \times 3 \times 2 \times 1 = 40,320$

So, $8! = 40,320$.

Would you like further details on factorials or any other questions?

Here are 5 related questions to explore:

1. What is the value of $10!$?
2. How can factorials be used in permutations and combinations?
3. What is the factorial of zero, $0!$, and why?
4. How would you simplify $8! \div 6!$?
5. Can you express factorials in terms of recursive functions?

Tip: Factorials grow very quickly! Even relatively small numbers like 20 have huge factorials.