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Calculate the Least Common Multiple or LCM of 10, 40, 26 and 2

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The instructions to find the LCM of 10, 40, 26 and 2 are the next:

1. Decompose all numbers into prime factors

102
55
1
402
202
102
55
1
262
1313
1
22
1

2. Write all numbers as the product of its prime factors

Prime factors of 10=2 . 5
Prime factors of 40=23 . 5
Prime factors of 26=2 . 13
Prime factors of 2=2

3. Choose the common and uncommon prime factors with the greatest exponent

Common prime factors: 2

Common prime factors with the greatest exponent: 23

Uncommon prime factors: 5 , 13

Uncommon prime factors with the greatest exponent: 51, 131

4. Calculate the Least Common Multiple or LCM

Remember, to find the LCM of several numbers you must multiply the common and uncommon prime factors with the greatest exponent of those numbers.

LCM = 23. 51. 131 = 520


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