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Inequalities for σ(n) and φ(n) - MaRDI portal

Inequalities for σ(n) and φ(n)

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Publication:3213180

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DOI10.2307/2688653zbMath0268.10006OpenAlexW4212886346MaRDI QIDQ3213180

U. Annapurna

Publication date: 1972

Full work available at URL: https://doi.org/10.2307/2688653

zbMATH Keywords

inequalities sum of divisors Euler's totient number-theoretic functions

Mathematics Subject Classification ID

Arithmetic functions; related numbers; inversion formulas (11A25)

Related Items (1)

On the problem σod(n) = σod(n+1)

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