Răspuns :
[90,245]=2x3²x5x7²=4410
90=2x3²x5
245=5x7²
270=2x3³x5
150=2x3x5²
[270,150]=2x3³x5²=1350
27=3³
15=3x5
[27,15]=3³x5=135
9=3²
245=5x7²
[9,245]=3²x5x7²=2205
90=2x3²x5
245=5x7²
270=2x3³x5
150=2x3x5²
[270,150]=2x3³x5²=1350
27=3³
15=3x5
[27,15]=3³x5=135
9=3²
245=5x7²
[9,245]=3²x5x7²=2205