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What is the sum of the prime factors of 570?

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by VJesus12 » Fri May 11, 2018 7:29 am
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What is the sum of the prime factors of 570?

A. 29
B. 30
C. 65
D. 66
E. 67

The OA is the option A.

May anyone helps me here? I got 30. I need some help. <i class="em em-tired_face "></i>
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by Vincen » Fri May 11, 2018 8:14 am
VJesus12 wrote:What is the sum of the prime factors of 570?

A. 29
B. 30
C. 65
D. 66
E. 67

The OA is the option A.

May anyone helps me here? I got 30. I need some help. <i class="em em-tired_face "></i>
Hello Vjesus12.

Here, we first have to find the prime factorization of 570 as follows: $$570=2\cdot285=2\cdot3\cdot95=2\cdot3\cdot5\cdot19.$$ Therefore, the prime factors of 570 are: 2, 3, 5 and 19 and its sum is: $$2+3+5+19=29.$$ This tells us that the correct answer is the option A (maybe you made a mistake when you added the factors).

I hope it helps you.

Regards.
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by Scott@TargetTestPrep » Tue May 07, 2019 5:41 pm
VJesus12 wrote:What is the sum of the prime factors of 570?

A. 29
B. 30
C. 65
D. 66
E. 67

The OA is the option A.

May anyone helps me here? I got 30. I need some help. <i class="em em-tired_face "></i>
Let’s break 570 into prime factors:

570 = 57 x 10 = 19 x 3 x 5 x 2

Thus, the sum of the prime factors is 19 + 3 + 5 + 2 = 29.

Answer: A

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