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Highly abundant number
In mathematics, a highly abundant number is a certain kind of natural number. Formally, a natural number n is called highly abundant iff for all m < n,
- σ(n) > σ(m)
where σ denotes the divisor function. The first few highly abundant numbers are 1, 2, 3, 4, 6, 8, 10, 12, 16, 18, 20, 24, 30, 36, 42, 48, 60, ... .
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Last updated: 05-29-2005 10:54:25
03-10-2013 05:06:04
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The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details