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4 can be divided perfectly by 1,2,and 4,so F(4)=3. 6 can be divided perfectly by 1,2,3 and 6, so F(6)=4

Posted by Sempr at 2006-07-30 15:31:05 on Problem 2886
In Reply To:F(p)=p-1??? Posted by:cristiano at 2006-07-30 15:03:17 



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