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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.

Q: What number has 5 factors exactly between 10 and 30?

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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.

45

Any number n=q1q2...q10 with qi a prime number

Any composite number. Examples: 4 and 9 . . . (three factors) 6, 8, and 10 . . . (four factors) 12 . . . (six factors) 60 . . . (twelve factors)

Exactly halfway between them is 10.15.

The factors of 81 that are between 2 and 10 are 3 and 9.

no because every number is multiplied by 1 and it equals the same as the number...yay:D

48 has 10 factors.

12

48 has ten factors, 60 and 72 have twelve apiece, 80 is the next one with exactly ten.

10 is a factor that has four ; 1 , 2 , 5 , & 10

It's a multiple of 5, a multiple of 6 (since it's between twin primes), and less than 50. The only possibility is 30. To check: The factors of 30 are 1, 2, 3, 5, 6, 10, 15, and 30