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@ 2013-03-13T14:23:42Z

<?php
function x($n) {
    for($i = 1; $i <= $n; $i++) {
    	if ($n % $i == 0 && $i != $n) {
    		$factors[] = $i;
            echo "$i ";
    	}
    }
array_sum($factors) == $n ? printf(I) : printf(I);
}

x(28);

Output
Performance
VLD
References
Branches

array_sum: documentation ( source)
printf: documentation ( source)

preferences:dark modelive preview

32.4 ms | 402 KiB | 5 Q