All 6 Uses

factor
in
The Circle
(Auto-generated)

But every time you post or comment or attend anything, that gets factored in, and you'll see your rank change accordingly.†
p. 101.6 *

factored = considered (for affect on a result or outcome)
Jennifer's score is the result of comparing her test results, her class rank, her school's relative academic strength and a number of other factors.†
p. 343.2 *

factors = things that affect a result or outcome
And of course these can be broken up between public and private, regional, and the rankings can be merged, weighted and analyzed to see trends among various other factors—socioeconomic, race, ethnicity, everything.†
p. 344.1
There's nothing like a fixed and relatively homogenous group, exposed to the same factors—and a group you can study over time.†
p. 157.1
Circle developers have figured out a way to measure the impact of these factors, of your participation, really, and articulate it with the Conversion Rate.†
p. 251.9
You factor in every state and local election, we're talking hundreds of billions every year in unnecessary costs associated with simple vote processing.†
p. 394.5

Definitions:

(1) (factor as in: It was the deciding factor.)
something that affects a result or outcome

You also may encounter x-factor or x factor--meaning "the most important thing that influences a result or outcome."
(2) (factor as in: factor it into your thinking)
include consideration of
(3) (meaning too rare to warrant focus)
There are many specialized meanings in fields such as mathematics, business, finance, biology, and grammar.