Project Euler Problem 5

Saya suka tipe soal yang ini, tidak perlu coding, hanya menggunakan kertas dan pensil, coret-coret sedikit, dapat hasilnya.

Problem Description:

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?

Note: evenly divisible = habis dibagi.