  Let $S_{\rm lcm}(n)$ denote the set of permutations $\pi$ of
$[n]=\{1,2,\dots,n\}$ such that ${\rm lcm}[j,\pi(j)]\le n$ for each $j\in[n]$.
Further, let $S_{\rm div}(n)$ denote the number of permutations $\pi$ of $[n]$
such that $j\mid\pi(j)$ or $\pi(j)\mid j$ for each $j\in[n]$. Clearly $S_{\rm
div}(n)\subset S_{\rm lcm}(n)$. We get upper and lower bounds for the counts of
these sets, showing they grow geometrically. We also prove a conjecture from a
recent paper on the number of "anti-coprime" permutations of $[n]$, meaning
that each $\gcd(j,\pi(j))>1$ except when $j=1$.
