How many different positive integers are factors of 196 ?
Select.
A) 1 B) 2 C) 3 D) 49 E) 36
15, 14×15, 14=7^2 × 2^2   So total factors = (6+1)(6+1) = 49   Answer: 49
<result>D</result>
How many different positive integers are factors of 196 ?