Name two 2digit factors whose product is greater than 200 but less than 600

10 can be considered as a common factor between 200 and 600 where:

200 = 10*20

600 = 10*60

Therefore, multiplying the 10 by a 2-digit number between 20 and 60 would give a product that is greater than 200 and less than 600.

Examples:

10*21 = 210

10*45 = 450

10*53 = 530