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(number1,number2, ...)

Number1, number2,...     are 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.


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Formula Description (Result)
=LCM(5, 2) Least common multiple of 5 and 2 (10)
=LCM(24, 36) Least common multiple of 24 and 36 (72)
Applies to:
Excel 2007