class Program
{
static void Main()
{

for (int j = 1; j < 10000; j++)
{
if (j % 2 == 0)
{
if (PerfectNumber.IsPerfectNumber(j))
Console.WriteLine(j + "is perfect");
}
}
Console.ReadLine();
}
}

public static class PerfectNumber
{
public static bool IsPerfectNumber(int n)
{
var totalFactor = 0;
for (var i = 1; i < n; i++)
{
if(n % i == 0)
{
totalFactor = totalFactor + i;
}
}

return totalFactor == n;
}
}