Smallest multiple

Show HTML problem contentShow HTML problem content  Published on Friday, 30th November 2001, 06:00 pm; Solved by 486081;
Difficulty rating: 5%

Problem 5

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?