LCM:
Returns the least common multiple
The LCM function returns the least common multiple of integers. The least common multiple is the smallest positive integer
that is a multiple of all integer arguments number1, number2, and so on. Use LCM to add fractions with different denominators.
LCM takes
1 required argument and
254 optional arguments:
Syntax: LCM(number1,
[number2], ...
)
The arguments for the LCM function are:
Argument

Required?

Description

number1, number2, ... 
Required 
number1 is required, subsequent numbers are optional. 1 to 255 values for which you want the least common multiple. If value is not an integer, it is truncated. 
• If any argument is nonnumeric, LCM returns the #VALUE! error value. 
• If any argument is less than zero, LCM returns the #NUM! error value. 
• If LCM(a,b) >=2^53, LCM returns the #NUM! error value. 
The LCM function returns the least common multiple of integers.