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.
10 is a factor that has four ; 1 , 2 , 5 , & 10
Four factors.
6, 8 and 10
Four
Any number of the form a*b^4 where a and b are different prime numbers, or c^9 where c is a prime, will have exactly 10 factors.
Any composite number. Examples: 4 and 9 . . . (three factors) 6, 8, and 10 . . . (four factors) 12 . . . (six factors) 60 . . . (twelve factors)
Four factors.
10 has four factors.
Four of them
6, 8, 10, 14, 15, 21, 22, 26, 27, 33, 34, 35, 38, 39, 46 have exactly four factors.
6, 8 and 10 are some numbers with four factors.
Four