32的倍数:32,64,96,128,160,192,224,256,288,320,352,384,416,448,.
40的倍数:40,60,120,160,200,240,280,320,360,400,440,480,520,560,.
32和40的公倍数:160,320,480,640,800,960,1120,1280,1440,1600,1760,.
其中最小公倍数是160.