Ответ:\(2\cdot2\cdot5=20\). Делители: \(1,2,4,5,10,20\).\(3\cdot5\cdot7=105\). Делители: \(1,3,5,7,15,21,35,105\).Ответ: 1) 1, 2, 4, 5, 10, 20; 2) 1, 3, 5, 7, 15, 21, 35, 105.