Divisors and Reciprocals

Alice is teaching Bob maths via a game called $N$-guesser. Alice has a positive integer $N$ which Bob needs to guess. She gives him two pieces of information with which to do this: - A positive integer $X$, which denotes the sum of divisors of $N$. - Two positive integers $A$ and $B$, which denote that the sum of reciprocals of divisors of $N$ is $A/B$. Bob either needs to guess $N$ or tell tha