If the ring of integers corresponds to finite cyclic groups, what infinite
rings do the other finite groups correspond to?
Consider $\mathbb{Z}_n$, where $n$ is any positive integer. Then there is
a subgroup of $\mathbb{Z}_n$ for each divisor $d$ of $n$, so that the
number of subgroups equals the number of divisors of $n$. If
$|subg(\mathbb{Z}_n)| < |div(n)|$, then there's a non-trivial divisor that
doesn't generate a proper nontrivial subgroup, etc. So the subgroups of
$\mathbb{Z_n}$ correspond to divisors of $n$ in the ring $\mathbb{Z}$.
What about other finite groups, is there a ring such that divisors in the
ring of the finite group order $|G|$ correspond to subgroups of $G$?
Thanks.
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