Factors of an integer: Difference between revisions

=={{header|JavaScript}}==

<lang javascript>function factors(num) {

var factors = new Array();

var sqrt = Math.floor(Math.sqrt(num));

for (var i = 1; i <= sqrt; i++) {

if (num % i == 0) {

factors.push(i);

if (num / i != i)

factors.push(num / i);

}

}

factors.sort(function(a,b){return a-b}); // numeric sort

return factors;

}

factors(45); // [1,3,5,9,15,45]

factors(53); // [1,53]

factors(64); // [1,2,4,8,16,32,64] </lang>