10. Given positive integers $x_{1}, x_{2}, x_{3}, \cdots, x_{2020}$ satisfy $x_{1}+x_{2}+x_{3}+\cdots+x_{2020}=x_{1} x_{2} x_{3} \cdots x_{2020}$. Then among these 2020 positive integers, the maximum number of values that can be 1 is $\qquad$.
$2018$