Definition:Ore Number/Examples

Examples of Ore Numbers

Let $\map H n$ denote the harmonic mean of the divisors of $n$.

$6$ is an Ore Number

$\map H 6 = 2$

$28$ is an Ore Number

$\map H {28} = 3$

$140$ is an Ore Number

$\map H {140} = 5$

$270$ is an Ore Number

$\map H {270} = 6$

$496$ is an Ore Number

$\map H {496} = 5$

$672$ is an Ore Number

$\map H {672} = 8$

$1638$ is an Ore Number

$\map H {1638} = 9$