Ответ:

1. 14 < х < 24

х = 17, 19, 23, 29, 31, 37, 41, 43

2. 30 < х < 42

х = 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41

3. 18 | 2. 32 | 2. 126 | 2

9 | 3. 16 | 2. 63 | 3

3 | 3. 8 | 2. 21 | 3

1 | 4 | 2. 7 | 7

2 | 2. 1 |

1 |

2520 | 2. 5752 | 2

1260 | 2. 2376 | 2

630 | 2. 1188 | 2

315 | 3. 594 | 2

105 | 3. 297 | 3

35 | 5. 99 | 3

7 | 7. 33 | 3

1 | 11 | 11

1 |

10. Д(28)={1,4,7,28}

(сори, остальные я хз как решать)