Definition:Ore Number

Definition
Let $n \in \Z_{>0}$ be a positive integer.

$n$ is an Ore number the harmonic mean of its divisors is an integer.

Also known as
An Ore number can also be seen referred to as a harmonic number, but that term is used on to denote a summation of reciprocals.

Other sources use the more unwieldy term harmonic divisor number.

Still others use the term Ore harmonic number or Ore's harmonic number.

The term harmonic integer can also be found.