2 papers
math.NT2026
Matchable numbers
Nathan McNew, Carl Pomerance
We say a natural number is matchable if there is a bijection from the set of divisors of to the set , where corresponding numbers are relativel…
math.NT2026
On the densities of covering numbers and abundant numbers
Nathan McNew, Jai Setty
We investigate the densities of the sets of abundant numbers and of covering numbers, integers for which there exists a distinct covering system where every modulus divides …