scientific article; zbMATH DE number 4128886

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zbMath0689.10011MaRDI QIDQ4207959

József Sándor

Publication date: 1989

Title: zbMATH Open Web Interface contents unavailable due to conflicting licenses.

zbMATH Keywords

perfect numbers divisor function Euler's totient Dedekind's totient

Mathematics Subject Classification ID

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

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