We define $a(n)$ as the number of positive divisors of $n$ and $b(n)$ as the sum of the positive divisors of $n$. There are $m$ positive integers $n$ between $1$ and $2022$ inclusive such that both $a(n)$ and $b(n)$ are odd. Enter $m$.
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Tags: number theory
We define $a(n)$ as the number of positive divisors of $n$ and $b(n)$ as the sum of the positive divisors of $n$. There are $m$ positive integers $n$ between $1$ and $2022$ inclusive such that both $a(n)$ and $b(n)$ are odd. Enter $m$.