That sounds like two different questions.
The factors for -144 are 1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 144 and their negatives. The prime factors are 2 and 3. -16 and 9 add up to -7.
sum of prime factors of 245 = 12factors of 245: 1, 5, 7, 35, 49, 245.prime factors of 245: 5 & 7sum of prime factors of 245: 5 + 7 = 12
The prime factors are: 2, 3 and 7. (2+3+7 = 12)
42 has three prime factors: 2, 3 and 7
There are not five prime factors of 7. There is only one prime factor of 7 because 7 is a prime number. The factors of 7 are 1 and 7; the prime factor of 7 is 7.
In a perfect number, the sum of all the factors (including the number itself) is twice the number. E.g., the sum of the factors of 6 is 1 + 2 + 3 + 6 = 12 (equal to 2 x 6). Every prime number has two factors: 1, and itself. So, the sum of the factors is only one more than the prime number itself; for any number greater than 1, this can't be twice the number. For example, the prime number 7 has the factors 1 and 7, which add up to 8.
The factors of 91 are: 1 7 13 91.The prime factors are: 7 x 13The sum of the prime factors = 7 + 13 = 20
The prime factors of 28 are 2 and 7. Their sum is 9.
The prime factors of 14 are 2 and 7. 2 + 7 = 9.
sum of prime factors of 245 = 12factors of 245: 1, 5, 7, 35, 49, 245.prime factors of 245: 5 & 7sum of prime factors of 245: 5 + 7 = 12
The prime factors are: 2, 3 and 7. (2+3+7 = 12)
The prime factors are: 2 and 5 (2+5 = 7)
Factors for 20 are: 1, 2, 4, 5, 10, 20 Prime Factors: 2, 5 sum of prime factors = 2 + 5 = 7
The prime factors of 50 are: 2 and 5. 2+5 = 7
The factors of 48 are: 1, 2, 3, 4, 6, 8, 12, 16, 24, and 48.The prime factors of 48 are: 2 and 3.The factors of 112 are: 1, 2, 4, 7, 8, 14, 16, 28, 56, and 112.The prime factors of 112 are: 2 and 7.The factors of 144 are: 1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, and 144.The prime factors of 144 are: 2 and 3.
2, 3, 5, 7 are the 4 prime factors Number is: 210
42 has three prime factors: 2, 3 and 7
5 + 7 + 11 + 13 + 17 = 53