Numbers whose positive divisors have small integral harmonic mean

نویسنده

  • Graeme L. Cohen
چکیده

A natural number n is said to be harmonic when the harmonic mean H(n) of its positive divisors is an integer. These were first introduced almost fifty years ago. In this paper, all harmonic numbers less than 2 × 109 are listed, along with some other useful tables, and all harmonic numbers n with H(n) ≤ 13 are determined.

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عنوان ژورنال:
  • Math. Comput.

دوره 66  شماره 

صفحات  -

تاریخ انتشار 1997