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What is the sum of the prime factors of 570?

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Math Expert
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Joined: 02 Sep 2009
Posts: 50009
What is the sum of the prime factors of 570?  [#permalink]

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New post 20 Apr 2017, 23:43
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

92% (01:08) correct 8% (00:46) wrong based on 57 sessions

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Senior Manager
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Re: What is the sum of the prime factors of 570?  [#permalink]

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New post 21 Apr 2017, 01:56
570 can be written as = 2*3*5*19

Sum of the prime factors of 570 = 2+3+5+19 = 29

Answer is A. 29
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Re: What is the sum of the prime factors of 570?  [#permalink]

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New post 21 Apr 2017, 02:38
570= 57*10= 3*19*2*5

3+2+5+19= 29
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Re: What is the sum of the prime factors of 570?  [#permalink]

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New post 25 Apr 2017, 09:02
Bunuel wrote:
What is the sum of the prime factors of 570?

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


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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Re: What is the sum of the prime factors of 570? &nbs [#permalink] 25 Apr 2017, 09:02
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What is the sum of the prime factors of 570?

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