To help you specifically with "20367.rar", please let me know:
A study on gene duplications. Recommendations for opening .rar files: 20367.rar
However, the results also show "RAR" in other contexts, including: A common compressed file format. To help you specifically with "20367
consider using a secure, reputable unarchiving tool and verify the source of the 20367.rar file before opening it. To help you specifically with "20367.rar"
or content (e.g., RPG maps, technical data) you are trying to extract? Are you encountering a specific error message ?
Other tools like WinRAR or The Unarchiver (for Mac) can be used.
If this is related to a different "RAR" (like the court case or a different topic), please provide more context!