Question

1. Scrieti divizorii urmatoarelor nr naturale : 14 , 15, 21,45
2. Scrieti divizorii nr naturale : 20 , 18 , 24 , 28 , 36 , 60 , 72 , 80 .

Answer 1

1) divizorii lui 14- 1, 2, 7, 14
15= 1 5 3 15
21= 1 3 7 21
45= 1, 5 ,9 ,45
2) 20= 1 , 5 ,4 ,20
18= 1, 3 , 6, 2 ,9, 18
36= 1, 6, 36
60= 1, 10, 6, 60
72= 1, 8, 9, 72
80= 1 , 2, 40, 80

Answer 2

1. 14 ={ 1, 2, 7, 14 }       ;    15  = {1, 3, 5, 15}
     21 = {1, 3, 7, 21}       ;     45 = {1, 3, 5, 9, 15, 45}

2.

20 = {1, 2, 4, 5, 10, 20{    ;      18 = {1, 2, 3, 6, 9,18}

24 = {1, 2, 3, 4, 6, 8, 12, 24}    ;    28 = {1, 2, 4, 7,14, 28}

36 = {1, 2, 4, 6, 9, 18, 36}  ;              60 = {1, 2, 3, 4, 5, 6,10, 15, 20, 30, 60}

72 ={1, 2, 3, 4, 6, 8, 9, 12, 18,  36, 72}    ;  

80 = {1, 2, 4, 5, 8, 10, 16, 20, 40, 80}