On the Products $(1^{\mathrm{\ell }}+1)(2^{\mathrm{\ell }}+1)\cdots (n^{\mathrm{\ell }}+1)$, II

In this paper, the following results are proved: (i) For any odd integer $\mathrm{\ell }$ with at most two distinct prime factors and any positive integer $n$, the product $(1^{\mathrm{\ell }}+1)(2^{\mathrm{\ell }}+1)\cdots (n^{\mathrm{\ell }}+1)$ is not a powerful number; (ii) For any integer $r\ge 1$, there exists a positive integer $T_r$ such that, if $\mathrm{\ell }$ is a positive odd integer with at most $r$ distinct prime factors and $n$ is an integer with $n\ge T_r$, then $(1^\ell+1)(2^\ell+1)\cdots (n^\ell +1)$ is not a powerful number.