Exercice 14 :
a. 630 ║2 5005║ 5 3192 ║2
315 ║3 1001 ║7 1596║2
105 ║3 143║11 798║2
35 ║5 13 ║13 399║3
7 ║7 1 ║ 1 133║7
1 ║1 19║19
630 = 2 x 3² x 7 5005 = 5 x 7 x 11 x 13 1 ║1
3192 = 2³x3x7x19
Exercice 15 :
A = 2² x 3² x 5 B = 2³ x 3 x 5 C = 2⁴ x 3 x 5² x 7 x 11
A = 4 x 9 x 5 B = 8 x 15 C = 16 x 3 x 25 x 77
A = 180 B = 120 C = 92400
