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Displaying similar documents to “On the iterates of the sum of exponential divisors.”

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We prove that there are no strings of three consecutive integers each divisible by the number of its divisors, and we give an estimate for the number of positive integers n ≤ x such that each of n and n + 1 is a multiple of the number of its divisors.

The 3rd Czech and Polish Conference on Number Theory. Problem session

Štefan Porubský, Kazimierz Szymiczek (2000)

Acta Mathematica et Informatica Universitatis Ostraviensis

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