2的倍数:480,450,540,840,584,854,504,804,548,458,508,408,5的倍数:480,840,540,580,485,845,405,8053的倍数:480,840,408,804,450,540,405,504既是2的倍数又是3的倍数：480,408,804,450,540,504,同时是2,3,5的倍数4...