AMC 10 Step by Step
Log inSign up
2021 AMC 10BProblem 12P11-15~3 minPrint
Divisibility & FactorsPrimesMap the objects to something easier to countSet up the equation/formula and compute; no special trick needed

Let N=34⋅34⋅63⋅270N = 34 \cdot 34 \cdot 63 \cdot 270 . What is the ratio of the sum of the odd divisors of NN to the sum of the even divisors of NN ?

Log in to save your progress.

Similar problems

Problem © Mathematical Association of America (MAA), American Mathematics Competitions. Reproduced for non-commercial educational use. Solution and commentary are original to this site.