78
36 as a product of its prime factors is 2 x 2 x 3 x 3. Their total is 10. 36 as a product of factors that total 13 is 4 x 9
1260 630,2 315,2,2 105,3,2,2 35,3,3,2,2 7,5,3,3,2,2
The digit sum of 297 is 9. Thus it can be divided by 9. Do this and you get 33, which is known to be 3x11 from the times tables. Therefore the prime factors of 297 are 3, 3, 3 and 11. This can be written as 11x33
Factors cannot be used to get means. The mean of 3, 7 and 13 is (3+7+13)/3 = 23/3 = 72/3 The numbers whose mean was calculated (3, 7 and 13) were all prime numbers, there were a prime number of them (3), and their sum was prime (23). No factors in sight!
Find the different prime factors of 550. They are 2, 5 and 11. Add them. The answer is 18.
550/11=50 50/5=10 10/5=2 2+5+5+11=23
the prime factors of sum of 121 is 112 and 22
The prime factors of 28 are 2 and 7. Their sum is 9.
532
The factors of 91 are: 1 7 13 91.The prime factors are: 7 x 13The sum of the prime factors = 7 + 13 = 20
217
Factors for 20 are: 1, 2, 4, 5, 10, 20 Prime Factors: 2, 5 sum of prime factors = 2 + 5 = 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 of 36 are 2 and 3. Add them together.
The prime factors are: 2 and 5 (2+5 = 7)
13