- HCF & LCM | 最大公因數與最小公倍數Meaning of HCF 最大公因數的意義Meaning of LCM 最小公倍數的意義Finding H.C.F. by Listing Factors 運用列舉法求最大公因數Finding L.C.M. by Listing Multiples 運用列舉法求最小公倍數HCF & LCM of Two Numbers by Short Division 以短除法求兩個數的HCF和LCMHCF & LCM of Three Numbers by Short Division 以短除法求三個數的HCF和LCMHCF & LCM of Two Numbers by Prime Factorization 以質因數分解法求兩個數的HCF和LCMHCF & LCM of Three Numbers by Prime Factorization 以質因數分解法求三個數的HCF和LCMDiagonal ProblemDiagonal Problem Explained