Factor

A factor, a Latin word meaning 'who/which acts' may refer to:
* Factor (agent), a person who acts for another, notably a mercantile and/or colonial agent
* Factor (Scotland), a person or firm managing a Scottish estate
* FACTOR, the Foundation to Assist Canadian Talent on Records
* Factors of production, a resource used in the production of goods and services
* An entity providing commercial finance services known as Factoring (finance)
* Max Factor, Sr., a Polish-American businessman and cosmetician
* Max Factor, Jr., son of the above, born Francis Factor
* Max Factor, a cosmetics company founded by Max Factor, Sr.
* John Factor, a Prohibition-era gangster

In science:
* An enzyme, proteins that catalyze chemical reactions
* Coagulation factors, substances essential for blood coagulation
* A phenomenon presumed to affect an experiment; see design of experiments
* Sun Protection Factor, a unit describing reduction in transmitted ultraviolet light

In mathematics:
* Factorization the decomposition of an object into a product of other objects
* Integer factorization, the process of breaking down a composite number into smaller non-trivial divisors
* a coefficient
* a divisor of a particular number, or of an element of a monoid
* a von Neumann algebra with a trivial center
* In easier words: A number that takes part in a multiplication giving a particular number.

In technology:
* Human factors, a profession that focuses on how people interact with products, tools, or procedures
* "F"unctionality, "A"pplication domain, "C"onditions, "T"echnology, "O"bjects and "R"esponsibility;", In object-oriented programming

In computer science and information technology:
* Authentication factor, a piece of information used to verify a person's identity for security purposes
* Factor (Unix), a Unix command for numbers factorization
* Factor (programming language), an experimental Forth-like programming language

In television:
* "The O'Reilly Factor", an American talk show hosted by Bill O'Reilly on Fox News.
* "The Krypton Factor", a British game show hosted by Gordon Burns, formally on ITV. Also had an American version.