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9 May, 09:42

Which of the numbers 19,21,23, and 25 has the most factors

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  1. 9 May, 13:06
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    First let's find the factors of each number:

    19: 1,19

    21: 1,3,7,21

    23: 1,23

    25: 1,5,25

    21 has 4 factors, 25 has 3 and 23 and 19 are both prime numbers (with two factors). 21 has the most factors.
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