三的倍数有30,57,75,357,573,753,537,735,375,3570,5730,7530,5370,7350,3750,3057,3507,5073,5703,7053,7503,5037,5307,7035,7305,3075,3705.
同时三和二的倍数有30,3570,5730,7530,5370,7350,3750,
三的倍数有30,57,75,357,573,753,537,735,375,3570,5730,7530,5370,7350,3750,3057,3507,5073,5703,7053,7503,5037,5307,7035,7305,3075,3705.
同时三和二的倍数有30,3570,5730,7530,5370,7350,3750,