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An arithmetical question related to perfect numbers
Published online by Cambridge University Press: 02 March 2020
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For n ≥ 1 an integer, we shall denote by σ(n) the sum of the (positive) divisors of n.
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References
Hardy, G. H. and Wright, E. M., An introduction to the theory of numbers (5th edn.), Clarendon Press (1979).Google Scholar