Prepswift Tickbox arthemtic question

How is this question solved?

and how does it differ from this question?

the questions are from prepswift Tickbox #2 questions.

Thanks in advance!

For the first question, you have 17 positive factors. I’m also guessing you know how to count the number of divisors (or factors). So what can you say about how many distinct prime divisors an integer with 17 positive factors has?

I knew it was 17 positive factors but just overlooked that it is a prime number!! Thank you!!

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