如果a是b的因数，c又是的因数，那么a，b，c三个数的最大公约数是（ ）. [江西2018]

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SQL Error: select id,body,options from ***_enewstiku where sourceid='27159' and id < 2250229 and id<>'2250229' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='27159' and id > 2250229 and id<>'2250229' order by id asc limit 5