Indeed, the number 16 has 5 factors, 1, 2, 4, 8, and 16.
16
Well, If we looked at this way: (224) = 16777216, so this number has exactly 24 factors. (324) = 282429536481, so this number has exactly 24 factors. (510)(210)(34) = 810000000000, so this number has exactly 24 factors.
Take any 5 prime numbers and multiply them together.
3 5 7 11 13 17 19
16 and 81 have 5 factors
625 has five factors.
Indeed, the number 16 has 5 factors, 1, 2, 4, 8, and 16.
A prime number, like 2, 3 or 5.
16
16 does.
16
16
A prime number has exactly two factors.
A number that has exactly an odd number of factors is a power of another number. A number between 10 and 30 that is a power is 16. It is 24 (as well as 42) and its factors are 1, 2, 4, 8, and 16.
A number with exactly five factors is a number that is a prime number raised to the fourth power (p4). The factors are 1, p, p2, p3, and p4. Examples: The 5 factors of 24 = 16 are 1, 2, 4, 8, and 16. The 5 factors of 34 = 81 are 1, 3, 9, 27, and 81. The 5 factors of 54 = 625 are 1, 5, 25, 125, and 625.
Any number with five factors is composite. There isn't one in that range.