Driver code
precomputeCounts ( ) ; $ n = 16 ; echo " Total ▁ perfect ▁ divisors ▁ of ▁ " . $ n . " ▁ = ▁ " . countPerfectDivisors ( $ n ) . " STRNEWLINE " ; $ n = 12 ; echo " Total ▁ perfect ▁ divisors ▁ of ▁ " . $ n . " ▁ = ▁ " . countPerfectDivisors ( $ n ) ; ? >