untouchable number
From Wiktionary, the free dictionary
Archived revision by
Equinox
(
talk
|
contribs
)
as of 03:08, 20 February 2016.
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to navigation
Jump to search
English
[
edit
]
English
Wikipedia
has an article on:
untouchable number
Wikipedia
Noun
[
edit
]
untouchable
number
(
plural
untouchable numbers
)
(
mathematics
)
A
positive
integer
that cannot be expressed as the
sum
of all the
proper
divisors
of any positive integer (including the untouchable number itself).
Categories
:
English lemmas
English nouns
English countable nouns
English multiword terms
en:Mathematics
Hidden categories:
Pages with entries
Pages with 1 entry
Navigation menu
Personal tools
Not logged in
Talk
Contributions
Create account
Log in
Namespaces
Entry
Discussion
English
Views
Read
Edit
History
More
Search
Navigation
Main Page
Community portal
Requested entries
Recent changes
Random entry
Help
Glossary
Donations
Contact us
Tools
What links here
Related changes
Upload file
Special pages
Permanent link
Page information
Cite this page
Get shortened URL
Download QR code
Print/export
Create a book
Download as PDF
Printable version
In other projects
In other languages