How many pairs of positive integers $(a,b)$ satisfy $\frac{1}{a} + \frac{1}{b}=\frac{2}{17}$?
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
How many pairs of positive integers $(a,b)$ satisfy $\frac{1}{a} + \frac{1}{b}=\frac{2}{17}$?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
3
How many pairs of positive integers $(a,b)$ satisfy $\frac{1}{a} + \frac{1}{b}=\frac{2}{17}$?
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