six / solution 6.2

<?php

$numbers = [];
for ($i = 1; $i <= 12; $i++) {
    $numbers[] = random_int(1, 1000000);
}

foreach ($numbers as $n) {
    $factors = [];
    for ($i = 1; $i <= $n; $i++) {
        if ($n % $i === 0) {
            $factors[] = $i;
        }
    }
    print_r($n . " - " . implode(", ", $factors) . "\n");
}