Express 16 as a product of prime factors?

To express 16 as a product of prime factors, we first note that 16 is an even number, so we can divide it by 2. 16 divided by 2 equals 8. 8 is also divisible by 2, so we divide it by 2 again to get 4. Finally, 4 is divisible by 2, giving us 2 x 2 x 2 x 2, or 2^4. Therefore, 16 can be expressed as 2^4.