Well, darling, the prime factors of 240 are 2, 2, 2, 2, 3, and 5. Now, if you add those bad boys up, you get 16. So, the sum of the prime factors of 240 is 16. Hope that tickles your fancy!
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2, 3 and 5 are the prime factors of 240.
The prime factors of 28 are 2 and 7. Their sum is 9.
The factors of 91 are: 1 7 13 91.The prime factors are: 7 x 13The sum of the prime factors = 7 + 13 = 20
Factors for 20 are: 1, 2, 4, 5, 10, 20 Prime Factors: 2, 5 sum of prime factors = 2 + 5 = 7
240 is a composite number because it has factors other than 1 and itself. It is not a prime number.Factors of 240 are 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120 and 240.Prime Factors: 2, 3, 5