untouchable number
untouchable number · untouchable numbers
A positive integer that cannot be expressed as the sum of all the proper divisors of…A positive integer that cannot be expressed as the sum of all the proper divisors of any positive integer (including the untouchable number itself).
Meaning
1 sensesA positive integer that cannot be expressed as the sum of all the proper divisors of any positive integer (including the untouchable number itself).
Forms
plural: untouchable numbers| Singular | untouchable number |
|---|---|
| Plural | untouchable numbers |
regular