Write the prime factorization with exponents. Add 1 to each exponent. (Numbers without exponents actually have the exponent 1.) Multiply them together. That will be the number of factors.
10 = 2 x 5 = 21 x 51
2 x 2 = 4
10 has four factors.
72 = 23 x 32
4 x 3 = 12
72 has twelve factors.
Square numbers can be tricky. The prime factorization of 9 should be written as 32, not 3 x 3. Adding 1 to the 2 gives you 3. 9 has three factors.
41 is a prime number.
47 is a prime number.
11 is a prime number.
19 is a prime number so the factorization is 1 x 19
It is: 22*52*23 = 2300
19 is a prime number in its own right and needs no exponents
11 is a prime number in its own right and needs no exponents
11 is already prime. No factorization or exponents needed.
2^5
41 is a prime number.
47 is a prime number.
11 is a prime number.
The prime factorization for 245 is 7^2 x 5
Write the prime factorization with exponents. Add 1 to each exponent. (Numbers without exponents actually have the exponent 1.) Multiply them together. That will be the number of factors.
19 is a prime number so the factorization is 1 x 19
2^3*3
None. 887 is a prime number.