Topic
harmonic divisor number.
positive integer whose divisors have a harmonic mean that is an integer
The journal
Open the journal →The conversation starts in the journal — be the first to post.
About harmonic divisor number
In mathematics, a harmonic divisor number or Ore number is a positive integer whose divisors have a harmonic mean that is an integer. The first few harmonic divisor numbers are1, 6, 28, 140, 270, 496, 672, 1638, 2970, 6200, 8128, 8190.
Everything about harmonic divisor number →