分析:根據(jù)最大公約數(shù)和最小公倍數(shù)的意義可知:最大公約數(shù)是兩個數(shù)的公有的質(zhì)因數(shù)的乘積,最小公倍數(shù)是兩個數(shù)公有的質(zhì)因數(shù)和各自獨有的質(zhì)因數(shù)的乘積,據(jù)此把57和133先分解質(zhì)因數(shù)然后據(jù)此求出它們的最大公約數(shù)和最小公倍數(shù);
解答:解:57=3×19,
133=7×19,
所以57和133的最大公因數(shù)是:19,
最小公倍數(shù)是:3×7×19=399;
故答案為:19;399.
點評:本題主要考查兩個數(shù)的最大公因數(shù)和最小公倍數(shù)的求法,注意找準(zhǔn)兩個數(shù)公有的質(zhì)因數(shù)和獨有的質(zhì)因數(shù).