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A074316
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Abundant Fibonacci numbers.
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3
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144, 2584, 46368, 832040, 14930352, 102334155, 267914296, 4807526976, 86267571272, 1548008755920, 498454011879264, 23416728348467685, 160500643816367088, 2880067194370816120, 51680708854858323072
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OFFSET
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1,1
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LINKS
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EXAMPLE
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a(1)=144 because the sum of the aliquot divisors of 144 (which is a Fibonacci number) is 1+2+3+4+6+8+9+12+16+18+24+36+48+72=259, which is more than 144, hence 144 is abundant. 144 is the first abundant Fibonacci number.
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MATHEMATICA
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Select[Fibonacci[Range[100]], DivisorSigma[1, #]>2#&] (* Harvey P. Dale, Jul 27 2011 *)
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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