Project Euler problems (numbering) : follow naming convention.

Project-Euler/Problem005.js

@@ -0,0 +1,20 @@
+/*
+Smallest multiple
+
+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?
+*/
+
+export const findSmallestMultiple = () => {
+  const divisors = [20, 19, 18, 17, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2]
+  let num = 21
+  let result
+
+  while (!result) {
+    const isDivisibleByAll = divisors.every((divisor) => num % divisor === 0)
+    if (isDivisibleByAll) result = num
+    else num++
+  }
+
+  return result
+}