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Abundant number - Wikipedia, the free encyclopedia
In mathematics, an abundant number or excessive number is a number n for which σ ( n ) > 2 n . Here σ ( n ) is the sum-of-divisors function: the sum of all positive divisors of n , i...
en.wikipedia.org/wiki/Abundant_number |
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Highly abundant number - Wikipedia, the free encyclopedia
In mathematics, a highly abundant number is a natural number where the sum of its divisors (including itself) is greater than the sum of the divisors of any natural number less than it. Highly abund...
en.wikipedia.org/wiki/Highly_abundant_number |
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Abundant Number; Definition of Abundant Number ... More about Abundant Number ... Alaska Math Grade Level Expectations > Geometry > Real Number Systems > [10] N-1: Number Line...
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An integer $n$ is an abundant number if the sum of the proper divisors of $n$ is more than $n$ itself, or the sum of all the divisors is more than twice $n$ That is, $\sigma(n) > 2n$ with $\sigma(n)$ being the sum of divisors function. ... Math for the people, by the people.
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How do I describe in vocabulary form what a deficient number is and what an abundant number is? Answer deficient number - A positive integer the sum of whose divisors, including 1 but excluding itself, is less than itself. ... ; You are here: Experts > Science > Math for Kids > Basic Math > Deficient Number;
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There are infinitely many abundant numbers, both even (e.g., every multiple of 12) and odd (e.g., every odd multiple of 945). Every proper multiple of a perfect number, and every multiple of an abundant number, ... Deleglise98 M. Deléglise, "Bounds for the density of abundant integers," Experimental Math., 7:2 (1998) 137-
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Algorithmic Number Theory - Bibliography ... AMS - Fermat's Last Theorem; ADD. KEYWORDS: Number theory, Fermat's Last Theorem, History, Reports, Articles ... Number Theory Section of sci.math FAQ; ADD. KEYWORDS: Fermat's Last Theorem, Prime Numbers, Mersenne primes, Primality Testing...
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