Răspuns:
15= 3 × 5
15 I 3
5 I 5
1
90 = 2 × 3² × 5
90 I 3
30 I 3
10 I 2
5 I 5
1
20 = 2² × 5
14 = 2 × 7
28 = 2² × 7
94 = 2 × 47
21 = 3 × 7
70 = 2 × 5 × 7
16 = 2⁴
30 = 2 × 3 × 5
26 = 2 × 13
140 = 2² × 5 × 7
200 = 2³ × 5²
160 = 2⁵ × 5
nu am inteles ce doresti ,doar am descompus in factori primi
