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
