#include <iostream> 
#include <math.h>
 
using namespace std ;
 
int main ()
{ 
	unsigned n , b , a , perf ;
	cout << "Introduzca el numero de cifras: " ;
	cin >> n ;
	b = pow ( 10 , n) - 1 ; 
	perf = 0 ;
	for ( unsigned i = pow(10 , (n-1)) ; i <= b ; i++ ) 
	{
		for (unsigned j = 2 ; j <= i ; j++ )
		{
			if ( (i % j) == 0 )
			{
				a = i / j ;
				perf = a + perf ;
 
			} 
		}	
		if ( perf == i )
		{
			cout << "Numero perfecto: " << perf << endl ;
 
		}	
	}
 
}