You (plural) have different memories. Suppose you are all students in my class. Now I want to ask you to compare your memories by talking to students in another class and hearing about their memories. So should I say:
Compare your memories with others?
or
Compare your memories with others'?
The second makes more sense because you are not comparing your memories to people but to THEIR memories, but something about the sentence looks weird, so I thought to ask here.