Ответ:

  1. 2: 1, 2.
  2. 6: 1, 2, 3, 6.
  3. 12: 1, 2, 3, 4, 6, 12.
  4. 16: 1, 2, 4, 8, 16.
  5. 18: 1, 2, 3, 6, 9, 18.
  6. 20: 1, 2, 4, 5, 10, 20.
  7. 1: 1.
  8. 48: 1, 2, 3, 4, 6, 8, 12, 16, 24, 48.
  9. 100: 1, 2, 4, 5, 10, 20, 25, 50, 100.
  10. 104: 1, 2, 4, 8, 13, 26, 52, 104.
  11. 121: 1, 11, 121.
  12. 256: 1, 2, 4, 8, 16, 32, 64, 128, 256.