You could. All of the factors of 100 are factors of 200.
212
All of the factors of 35 are less than 200.
180: it has 18 factors.
1.2.4.5.,8,10.20.25.40.50.100.200
170
The factors of 9 are 1, 3, and 9.
The factors of 9 are 1, 3 and 9.
The factors of 200 are: 1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, and 200.
The prime factors of 200 are: 2, 5
The factors of 200 are: 1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200.
Since 100 is a factor of 200, all of its factors are common.