def lcm_array(numbers: list[int]) -> int:
    def mcd(i, j):
        x=max([i, j])
        y=min([i, j])
        while y!=0:
            r = x%y
            x=y
            y=r
        return x
    mcm = numbers[0]
    for n in numbers[1:]:
        mcm = mcm*n/mcd(mcm,n)
    return mcm