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A058652
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Squarefree n such that sigma(phi(n)) = phi(sigma(n)).
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1
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1, 29262, 114630, 160986, 179562, 252978, 502878, 528954, 780258, 908070, 1080906, 1826454, 2460786, 2870142, 3934686, 5086722, 5493030, 6001206, 6183078, 6621270, 6668634, 8808234, 9298110, 9752190, 10479282, 11707518, 12263334, 12928254, 13513278
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OFFSET
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1,2
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LINKS
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MATHEMATICA
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Select[ Range[ 10^7 ], DivisorSigma[ 1, EulerPhi[ # ] ] == EulerPhi[ DivisorSigma[ 1, # ] ] && Union[ Transpose[ FactorInteger[ # ] ] [ [ 2 ] ] ] == {1} & ]
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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