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Question
The sum of the prime factors of 1729 is ______.
Options
13
19
32
39
Solution
The sum of the prime factors of 1729 is 39.
Explanation:
we have
7 |
1729 |
13 |
247 |
19 |
19 |
1 |
The prime factors of 1729 = 7 × 13 × 19.
∴ The sum of the prime factors of 1729 = 7 + 13 + 19 = 39
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