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bonjour

28 = 2 ² x 7

60 = 2² x 3 x 5

140 = 2 ² x 5 x 7

36  = 2 ² x 3 ²

48 = 2 ⁴ x 3

100 = 2² x 5 ²

4 000 = 2 ⁵ x 5 ³

728 = 2 ³ x 7 x 13

755 = 5 x 151

1 024 = 2 ¹⁰

Bonjour,

28/2 = 14

14/2=7

=> 2*2*7

60/2=30

30/2=15

15/3=5

=> 2*2*3*5

140/2 =70

70/2 35

35/5=7

=> 2*2*5*7

36/2 =18

18/2=9

9/3=3

=> 2*2*3*3

48/2 24

24/2=12

12/2=6

6/2=3

=>2*2*2*2*3

100/2=50

50/2=25

25/5=5

=>2*2*5*5

4 000 /2 =2 000

2 000/2 = 1 000

1 000/2= 500

500/2= 250

250/2=125

125/5=25

25*5=5

=> 2*2*2*2*2*5*5*5

728 /2=364

364/2=182

182/2=91

91/7=13

=> 2*2*2*7*13

755 /5 =151

=> 5*151

1024/2= 512

512/2=256

256/2=128

128/2 =64

64/2 =32

32/2=16

16/2=8

8/2=4

4/2=2

=> 2*2*2*2*2*2*2*2*2*2

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