4
10 and -3
The prime factors are: 2, 3 and 7. (2+3+7 = 12)
42=2*3*7 2+3+7 = 12
41 is prime, and 51 factors to 3 * 17. the factors of the sum is 7 and 13, the factors of the product are 41, 3 and 17.
The factors of 91 are: 1 7 13 91.The prime factors are: 7 x 13The sum of the prime factors = 7 + 13 = 20
2, 3, 5, 7 are the 4 prime factors Number is: 210
4 and 3(4 + 3 = 7)or 1 and 6(1 + 6 = 7)or 5 and 2(5 + 2 = 7)
It's not entirely clear from the wording of your question what it is you want to know. Seven is a one-digit number. The sum of its digits is 7. Seven has two factors: 1 and 7. That sum is 8.
The prime factors of 28 are 2 and 7. Their sum is 9.
3 + 7 is an ADDITION sum
The odd factors of 70 are: 1, 5, 7, and 35. The sum of these factors is 48.