Problem 2544. Determine if given number is perfect

Created by sunny d

Solve Later

{"relationships":[{"relationshipType":"http://schemas.mathworks.com/matlab/code/2013/relationships/document","targetMode":"","relationshipId":"rId1","target":"/matlab/document.xml"},{"relationshipType":"http://schemas.mathworks.com/matlab/code/2013/relationships/output","targetMode":"","relationshipId":"rId2","target":"/matlab/output.xml"}],"parts":[{"partUri":"/matlab/document.xml","relationship":[],"contentType":"application/vnd.mathworks.matlab.code.document+xml","content":"<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<w:document xmlns:w=\"http://schemas.openxmlformats.org/wordprocessingml/2006/main\"><w:body><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>A number is</w:t></w:r><w:r><w:t> </w:t></w:r><w:hyperlink w:docLocation=\"http://en.wikipedia.org/wiki/Perfect_number\"><w:r><w:t>perfect</w:t></w:r></w:hyperlink><w:r><w:t> if it is equal to the sum of its factors, excluding itself.</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>Example</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>The number 6 is perfect since its factors (other than 6) are 1, 2, and 3.</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"code\"/></w:pPr><w:r><w:t><![CDATA[ 1 + 2 + 3 = 6]]></w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>Return 1 for true (perfect), otherwise 0.</w:t></w:r></w:p></w:body></w:document>"},{"partUri":"/matlab/output.xml","contentType":"text/xml","content":"<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\" ?><embeddedOutputs><metaData><evaluationState>manual</evaluationState><layoutState>code</layoutState><outputStatus>ready</outputStatus></metaData><outputArray type=\"array\"/><regionArray type=\"array\"/></embeddedOutputs>"}]}

Solve

Solution Stats

95 Solutions
43 Solvers

Last Solution submitted on Aug 28, 2020

Last 200 Solutions

Problem Comments

4 Comments

4 Comments

Show 1 older comment

Guillaume on 3 Sep 2014

Could you improve your test suite with more test cases? (e.g. 496, 28 (true) and 26, 500 (false))

Ned Gulley on 4 Sep 2014

I added some more tests.

Jean-Marie Sainthillier on 6 Sep 2014

See problem 1012.

J.R.! Menzinger on 16 Sep 2014

The point "the sum of its factors" is not correct. it must be "the sum of all his divisors"... :-/

Problem Recent Solvers43

Problem Tags

sun challenger