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How many factors of 7721290962 are odd numbers?

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posted Nov 22, 2018 by Anamika

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1 Answer

+1 vote

144


7721290962 = 2 × 3 × 3 × 7 × 11 × 11 × 17 × 31 × 31 × 31
Total number is calculated from the powers of odd factors by adding one rule:
3^2*7^1*11^2*17^1*31^3
(2+1)*(1+1)*(2+1)*(1+1)*(3+1)=3*2*3*2*4=144

answer Nov 22, 2018 by Hanifa Mammadov
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