60의소인수2,3,5이므로2의배수,3의배수,5의배수의개수를구한후,각두수의공통부분을제외해주고,세수의공통부분을더하면,44개가나옴.서로소는60-44=16개가됨.
[무물보AI] 답변 로딩중...