C#: if a byte is 0 to 255, then how come Encoding.UTF8.GetBytes(“çõ”) return values of up to 6 digits i.e. 195167 and 195181?

Question

This is my code:

byte[] sample = Encoding.UTF8.GetBytes("çõ");
foreach (byte c in sample)
  Debug.Write(c.ToString());

I am struggl