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R. F. Ryan       An abundancy result for the two prime power case and results for an equations of Goormaghtigh       Int. Math. Forum, Vol. 8, 2013, no. 9-12, 427-432       http://dx.doi.org/10.12988/imf.2013.13042
Copyright © 2013 R. F. Ryan. This article is distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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