N = Digit Sum X Digit Product

Number Theory Level pending

Find the sum of all of the numbers n n such that n n equals the product of the sum of it's digits and the product of it's digits.

For example, if we let n = A B n = \overline{AB} , then we should find that n = ( A + B ) × A B n = (A+B)\times AB .


The answer is 280.

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