You can find the prime factorization of 130: 130 = 2*5*13 Therefore the answer is 1. Or you can skip a step. Just divide 130 by 2. You get 65, which is an odd number. Therefore there is only 1 factor of 2 in the factorization of 130.
Twice. 10 x 10 = 100
32 has one prime factor: 232 has only one prime factor: 2
31 is a prime number. Its only prime factor is 31.
The only prime factor of 25 is 5.
2 is the only prime factor of 16.
The only prime factor of 16 is two.
Two
There are 2 factors in a prime number, 1 and itself.
There are 2 factors in a prime number, 1 and itself.
There are 25 prime numbers in that range. Any prime number can be a factor.
The exponent tells how many times the base is used as a factor.