Factors of 3 are 1, 3
Factors of 4 are 1, 2, 4
4 factors of 3
Four has only three factors: 1 2 4.
The number 9: factors are 9, 3, and 1.
Four has three factors: 1, 2 and 4
Three: one, two, and four.
Four
Four has only three factors and they are: 1, 2 and 4
Four has three factors: 1, 2 and 4
90 has three prime factors: 2, 3 and 5.
Four, four, six, three, six and two factors respectively.
7 has two different factors. 9 has three different factors. 10 has four different factors. 16 has five different factors. So, the answer is 10.
231 has exactly three prime factors. They are 3, 7, and 11.