Min Perimeter for Rectangle of Given Area in JavaScript

gistfile1.txt

function minPerimeter(num) {
  let min = 0;

  for (let i = 0; i * i <= num; i++) {
    if (num % i === 0) {
      min = 2 * (i + (num / i));

      if (!(i === num / i)) {
        if (min > 2 * (i + (num / i))) {
          min = 2 * (i + (num / i));
        }
      }
    }
  }

  return min;
}