Definition of factor verb from the Oxford Advanced Learner's Dictionary
factor
verb
ˈfæktə(r) ˈfæktər
Phrasal verbs
factor something in
|
factor something into something
(technical) to include a particular fact or situation when you are thinking about or planning somethingRemember to factor in staffing costs when you are planning the project.
ˈfæktə(r) 
ˈfæktər 
in