Find the difference between the sum of all 8 positive integral divisors of 66 and the sum of all 8 positive integral divisors of 70.

The answer is 0.   all 8 positive integral divisors of 66 are as follows:  1, 2. 3. 6, 11. 22. 33. 66.     the sum of these integers is 144.   all 8 positive integral divisors of 70 are as follows:  1, 2, 5, 7, 10, 14, 35, 70.  the sum of these integers is 144.   144-144=0