delarsumma
Sign in to saveAlso known as divisor sum, sigma function, divisor function
arithmetic function mapping a positive integer to the sum of all its positive divisors (including itself)
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- divisor function
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Delarsumman (eller divisorsumman) för ett positivt heltal n, är summan av talets positiva delare och betecknas oftast σ(n).
Abstract from DBpedia / Wikipedia · CC BY-SA