62的因數(shù)有1,2,31,62。因數(shù)是指整數(shù)a除以整數(shù)b(b≠0)的商正好是整數(shù)而沒有余數(shù),就說b是a的因數(shù)。事實上因數(shù)一般定義在整數(shù)上:設A為整數(shù),B為非零整數(shù),若存在整數(shù)Q,使得A=QB,則稱B是A的因數(shù),記作B|A。一般而言,整數(shù)A乘以整數(shù)B得到整數(shù)C,整數(shù)A與整數(shù)B都稱做整數(shù)C的因數(shù),反之,整數(shù)C為整數(shù)A的倍數(shù),也為整數(shù)B的倍數(shù)。