Mary and Jenna are playing a game in which each girl rolls a twenty-sided die with numbers from 1 to 20 on the faces.  If the number on the die that Mary rolls is a factor of the number on the die that Jenna rolls, Mary wins.  If the number on the die that Jenna rolls is a factor of the number on the die that Mary rolls, Jenna wins.  For how many possible rolls would both girls win?
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Mary and Jenna are playing a game in which each girl rolls a twenty-sided die with numbers from 1 to 20 on the faces.  If the number on the die that Mary rolls is a factor of the number on the die that Jenna rolls, Mary wins.  If the number on the die that Jenna rolls is a factor of the number on the die that Mary rolls, Jenna wins.  For how many possible rolls would both girls win?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
20
Mary and Jenna are playing a game in which each girl rolls a twenty-sided die with numbers from 1 to 20 on the faces.  If the number on the die that Mary rolls is a factor of the number on the die that Jenna rolls, Mary wins.  If the number on the die that Jenna rolls is a factor of the number on the die that Mary rolls, Jenna wins.  For how many possible rolls would both girls win?
train