The proper factors of 220 are 2,4,5,10,11,20,22,44,55,110
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1, 5, 7, and 35 are the factors of 35. The proper factors are 5 and 7.
47 is a prime, so its only factors are 1 and 47. Prime numbers don't have "proper" factors.
Abundant is a number for which the sum of all its proper factors is greater than the number itself. Deficient is a number for which the sum of all its proper factors is less than the number itself. Perfect is a number for which the sum of all its proper factors is the number itself.
The factors of 6: 1, 2, 3, 6.
The factors of 75 are: 1, 3, 5, 15, 25, and 75.The prime factors of 75 are: 3 and 5.The factors of 220 are: 1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, and 220.The prime factors of 220 are: 2, 5, and 11.