You can use this app to calculate the least common multiple and the greatest common divisor of a series of numbers. You can enter the number in the input on the top separated by a space or a comma and the app will automatically calculate the least common multiple (lcm) and the greatest common divisor (gcd) for you. The least common multiple (lcm) is the smallest positive integer that is divisible by all numbers in the series. e.g. the lcm of 24 and 80 is 240. 240 is the smallest number that c