Aikido

import math

function factor (n:int) {
    var result = []
    function append (v) {
        if (!(v in result)) {
            result.append (v)
        }
    }
    var sqrt = cast<int>(Math.sqrt (n))
    append (1)
    for (var i = n-1 ; i >= sqrt ; i--) {
        if ((n % i) == 0) {
            append (i)
            append (n/i)
        }
    }
    append (n)
    return result.sort()
}

function printvec (vec) {
    var comma = ""
    print ("[")
    foreach v vec {
        print (comma + v)
        comma = ", "
    }
    println ("]")
}

printvec (factor (45))
printvec (factor (25))
printvec (factor (100))