What is a power of 2 that has 5 factors?

A power of 2 that has exactly 5 factors is (2^4), which equals 16. The number of factors of a number (n = p^k) (where (p) is a prime and (k) is a positive integer) is given by (k + 1). For (2^4), the calculation is (4 + 1 = 5), indicating it has 5 factors: 1, 2, 4, 8, and 16.