def getTotalX(a, b):
    # Write your code here
    between = 0
    for num in range(1, max(b)+1):
        cond_a = all([bool(num%i==0) for i in a])
        cond_b = all([bool(i%num==0) for i in b])
        if cond_a and cond_b:
            between += 1
    return between