Processing math: 100%
 
+0  
 
+1
146
2
avatar+50 

Determine all positive integers n such that ϕ(n)+τ(n)>n.

 May 6, 2023
 #1
avatar
-1

The answer is 1 and all prime powers.

 May 6, 2023
 #2
avatar+50 
+1

no, it is not

RonnieChen  May 14, 2023

2 Online Users

avatar
avatar