# Summer's not yet over

Let $$d(n)$$ be the number of positive divisors of a natural number $$n$$.

Find the number of natural numbers $$n$$ such that $$d(n)=\frac{n}{p}$$ where $$p$$ is a prime and $$n\leq2250$$.

###### For a easier version, see Summer's over ... .
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