Calculates the least common multiple of a list of arguments. The least common multiple is the smallest number in Z, such as there exists a number in Z for each argument that can be multiplied by that argument to produce the result. In the example above, 14 * 2 = 28 and 4 * 7 = 28.
Lcm( x , y ) = ( ( x | Gcd( x , y ) ) * y ) |