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Counting in number theory. (Å telle opp i tallteorien.) (Norwegian)
Normat. Nord. Mat. Tidskr. 53, No. 1, 31-33 (2005).
The author gives a brief exposition of the most elementary aspects of the divisor problem of Dirichlet. This problem concerns the asymptotic behaviour of the average number of divisors of the integers from 1 to n as n tends to infinity. In 1849 Dirichlet gave a surprisingly good estimate. In this article a weaker version of his result is proved by an argument using the minimum of prerequisites.
Classification: F60
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