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−  <noinclude>[[Status::Basic definition ]][[Topic::Number theory ]]</noinclude>  +  <noinclude>[[Status::Basic definition ]][[Topic::Number theory ]][[Primary wiki::Number ]]</noinclude> 
   
 '''Perfect number''': A natural number that equals the sum of all its proper (positive) divisors.   '''Perfect number''': A natural number that equals the sum of all its proper (positive) divisors. 
   
−  No primary subject wiki entry.
 +  Primary subject wiki entry: [[Number:Perfect number]] 
   
 Also located at: [[Wikipedia:Perfect number]], [[Mathworld:PerfectNumber]], [[Planetmath:PerfectNumber]]   Also located at: [[Wikipedia:Perfect number]], [[Mathworld:PerfectNumber]], [[Planetmath:PerfectNumber]] 
Latest revision as of 18:26, 25 April 2009
Perfect number: A natural number that equals the sum of all its proper (positive) divisors.
Primary subject wiki entry: Number:Perfect number
Also located at: Wikipedia:Perfect number, Mathworld:PerfectNumber, Planetmath:PerfectNumber