Question
Find the number of factors of 80?
Solution
The factors of 80 are = 1, 2, 4, 5, 8, 10, 16, 20, 40 & 80. So total number of factors are 10. Alternate Method: After prime factorization just add 1 in all powers & then multiply them. 80 = 24 
5. So the number of factors of 80 are = (4+1) (1+1) = 5 2 = 10.
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