sum-of-the-all-proper-factors-of-360-

Question Number 174939 by BaliramKumar last updated on 14/Aug/22

sum of the all proper factors of 360 ?

Answered by JDamian last updated on 14/Aug/22

360 = 2^{3} \times 3^{2} \times 5

\frac{2^{3 + 1} - 1}{2 - 1} \times \frac{3^{2 + 1} - 1}{3 - 1} \times \frac{5^{1 + 1} - 1}{5 - 1} - 360

15 \times 13 \times 6 - 360 = 810

Commented by peter frank last updated on 14/Aug/22

thanks

Commented by BaliramKumar last updated on 15/Aug/22

i s 1 p r o p e r f a c t o r o f 360 ?