2025 IMO Problems/Problem 3
Let 
denote the set of positive integers. A function 
is said to be bonza if
divides 
for all positive integers 
and 
. Determine the smallest real constant 
such that 
for all bonza functions 
and all positive integers 
.
Video solution
https://www.youtube.com/watch?v=vPqUTG4CW8w
See Also
| 2025 IMO (Problems) • Resources | ||
| Preceded by Problem 2 |
1 • 2 • 3 • 4 • 5 • 6 | Followed by Problem 4 |
| All IMO Problems and Solutions | ||
