約數

divisor (of a number) / approximate number

to weigh in a balance or on a scale

to make an appointment / to invite / approximately / pact / treaty / to economize / to restrict / to reduce (a fraction) / concise

to count / to count as / to regard as / to enumerate (sb's shortcomings)

number / figure / several / CL:個|个[ge4]

frequently / repeatedly

highest common factor HCF / greatest common divisor GCD

common factor / common divisor