An integer $n\ge1$ is good if the following property is satisfied: If a positive integer is divisible by each of the nine numbers $n + 1, n + 2, ..., n + 9$, this is also divisible by $n + 10$. How many good integers are $n\ge 1$?
Problem
Source: 2022 Czech-Polish-Slovak Match Junior, individual p5 CPSJ
Tags: number theory, divisible