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Sagot :

Bonsoir

52 = 2 × 2 × 13

1 653 = 3 × 19 × 29

7 406 = 2 × 7 × 23 × 23

71 687 = 7 × 7 × 7 × 11 × 19

bonsoir,  

52/2 =26

26/2=13

=> 2*2*13

1 653/ 3 =551

551/19= 29

=> 3*19*29

7 406/2 =3 703

3 703/ 7=529

529/23 =23

=> 2*7*23*23

71 687/7 =10 241

10 241/7 =1 463

1 463/7 =209

209 /11 =19

=> 7*7*7*11*19

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