Definition:Multiply Perfect Number/Order
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Definition
Let $n \in \Z_{>0}$ be a multiply perfect number such that the sum of its divisors is equal to $m \times n$.
Then $n$ is multiply perfect of order $m$.
Also known as
Some sources use $n$-fold perfect.
Sources
- 1986: David Wells: Curious and Interesting Numbers ... (previous) ... (next): $120$
- 1997: David Wells: Curious and Interesting Numbers (2nd ed.) ... (previous) ... (next): $120$