Related Function:
The FACT function returns the factorial of a number.
Syntax
=FACT(number)
Arguments
Argument  Description  

number  The nonnegative number for which you want the factorial

Examples
A  B  C  

1  Formula  Result  Notes 
2  =FACT(5)  120  Factorial of 5, or 1*2*3*4*5 
3  =FACT(1.9)  1  Factorial of the integer of 1.9 
4  =FACT(3)  6  Factorial of 3, or 1*2*3 
Common Function Error(s)
Problem  What went wrong 

#VALUE!  Occurs if the supplied number argument is not recognized as a numeric value 
#NUM!  Occurs if the supplied number argument is < 0 
The factorial of a number, n!, is the product of all positive integers less than or equal to n. For example:
The factorial function is formally defined by the product:
See Wikipedia for more information on Factorial.