Trying to find factors of a number in JS

Question

I am just starting JS, and understand the concept of finding a factor. However, this snippet of code is what I have so far. I have the str variable that outputs nothing but the

Answer 1

Below is an implementation with the time complexity O(sqrt(N)):

function(A) {
  var output = [];

  for (var i=1; i <= Math.sqrt(A); i++) {
    if (A % i === 0) {
      output.push(i);

      if (i !== Math.sqrt(A)) output.push(A/i);
    }
  }

  if (output.indexOf(A) === -1) output.push(A);

  return output;
}