3 papers
math.NT2021
Distribution mod of Euler's totient and the sum of proper divisors
Noah Lebowitz-Lockard, Paul Pollack, Akash Singha Roy
We consider the distribution in residue classes modulo primes of Euler's totient function and the sum-of-proper-divisors function . We prove that the value…
math.NT2021
On factorizations into coprime parts
Matthew Just, Noah Lebowitz-Lockard
Let and be the number of unordered and ordered factorizations of into integers larger than one. Let and have the additional restriction that the fac…
math.NT2018
Irreducible quadratic polynomials and Euler's function
Noah Lebowitz-Lockard
Let be an irreducible quadratic polynomial in . We show that for almost all , does not lie in the range of Euler's totient function.