Bonjour,
15 = 5*3
25 = 5*5
PGCD: 5
27 =3*3*3
81 = 3*3*3*3
PGCD: 3*3*3 = 27
910/ 2 =455
455/5 =91
91/7 = 13
=> 2*5*7*13
105/ 3 =35
35/5=7
=> 3*5*7
en commun:
PGCD =
5*7 = 35
2 450/2 =1225
1225/5 = 245
245/5 =49
49/7 = 7
=> 2*5*5*7*7
675/5 =135
135/5 =27
27/3 = 9
9/3 =3
=> 3*3*3*5*5
en commun:
PGCD =
5*5 =25