On the numbers of the form \(\sigma(n)-n\) und \(n-\varphi(n)\).
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Publication:759051
zbMATH Open0272.10003MaRDI QIDQ759051
Publication date: 1973
Published in: Elemente der Mathematik (Search for Journal in Brave)
Special sequences and polynomials (11B83) Arithmetic functions; related numbers; inversion formulas (11A25)
Related Items (9)
Title not available (Why is that?) ⋮ DIVISOR‐SUM FIBERS ⋮ Sums of proper divisors follow the Erdős–Kac law ⋮ Sums of proper divisors with missing digits ⋮ Variant of a theorem of Erdős on the sum-of-proper-divisors function ⋮ On sigma‐phi numbers ⋮ Some problems of Erdős on the sum-of-divisors function ⋮ Numerical and Statistical Analysis of Aliquot Sequences ⋮ On numbers not of the form \(n-\omega(n)\)
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