Erdős–Nicolas number
| Named after | Paul Erdős, Jean-Louis Nicolas |
|---|---|
| Publication year | 1975 |
| Author of publication | Erdős, P., Nicolas, J. L. |
| Subsequence of | Abundant numbers |
| First terms | 24, 2016, 8190 |
| Largest known term | 1371332329173024768 |
| OEIS index | A194472 |
In number theory, an Erdős–Nicolas number is a number that is not perfect, but that equals one of the partial sums of its divisors. That is, a number n is Erdős–Nicolas number when there exists another number m such that
The first ten Erdős–Nicolas numbers are
They are named after Paul Erdős and Jean-Louis Nicolas, who wrote about them in 1975.
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