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This is the Prime Pages' interface to our BibTeX database.  Rather than being an exhaustive database, it just lists the references we cite on these pages.  Please let me know of any errors you notice.
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Deleglise98
M. Deléglise, "Bounds for the density of abundant integers," Experimental Math., 7:2 (1998) 137--143.  MR 2000a:11137
Abstract: We say that an integer n is abundant if the sum of the divisors of n is at least 2n. It has been known [Wall 1972] that the set of abundant numbers has a natural density A(2) and that 0.244 < A(2) < 0.291. We give the sharper bounds
0.2474 < A(2) < 0.2480.
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