Translation guide
The English word 'factor' covers several distinct meanings: a contributing element in a situation, a number that divides another in math, a coefficient or multiplier, and a business agent. This guide helps learners choose the right Japanese expression for each meaning.
What's the main factor?
To refer to one of several things that influence a result or situation.
The most common and neutral word for a factor that contributes to an outcome. Used in both spoken and written Japanese.
Stress is a major factor in illness.
Means 'element' or 'component'. Often used when breaking something down into its constituent parts. Slightly more abstract than 要因.
Technical term used in science, statistics, and mathematics for a factor or divisor. Not used in everyday conversation.
To refer to a number that divides another number exactly.
To refer to a number or quantity that multiplies another, often in scientific or economic contexts.
To refer to a person or company that acts on behalf of another in commerce.
要因 emphasizes causality (a factor that causes something), while 要素 is a more neutral 'element' or 'component'. Use 要因 when discussing reasons or causes, and 要素 when listing parts of a whole.
Analyze the factors behind the failure.
What are the factors behind your success?
Price is an important factor.
This plan involves many factors.
Genetic factors are involved.
The standard mathematical term for a factor (divisor). Used in arithmetic and algebra.
The factors of 12 are 1, 2, 3, 4, 6, and 12.
Also means divisor, but more common in elementary math contexts. 因数 is preferred in algebra.
Find all the factors of 6.
Means coefficient or factor in formulas, physics, and economics. E.g., safety factor, conversion factor.
Design taking the safety factor into account.
Multiply by this factor.
Used for magnification factor, multiplication factor, or ratio. Common in photography, finance, and statistics.
This lens has a high magnification factor.
General term for agent or proxy. Can be used for a factor in the sense of a commercial agent.
He negotiated as a factor for the company.
Historical term for a broker or factor, especially in commodities. Rarely used today.
Factors in the Edo period played an important role.
デザインの要素を考える。
Consider the elements of the design.
The loanword ファクター is sometimes used in business or technical contexts, but it sounds unnatural for everyday situations. Stick to 要因 or 要素 unless you're in a very specific field like finance or statistics.