Others Maths Puzzle

If AB^2=CCDD and A,B,C,D can be same digits but minimum one is greater than 0
then A+B+C+D =?

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Others Other Question

A is a natural number. If 2A has 28 factors, 3A has 30 factors, how many factors does 6A have ? 35/40/45/48 Is the five digit number ABCDE divisible by 13?
I. The number DE is divisible by 13.
II. 10A + B + 4C + 3D - E is divisible by 13