'''
2520 is the smallest number that can be divided by each of the numbers from 1 to 10 without any remainder.

What is the smallest positive number that is evenly divisible by all of the numbers from 1 to 20?
'''

from functools import reduce
from math import gcd


def lcm(x, y):
    return x * y // gcd(x, y)


print(reduce(lcm, range(1, 21)))
