Answer:
1395
Explanation:
Factors of 50: 1, 2, 5, 10, 25, and 50
Factors of 405: 1, 3, 5, 9, 15, 27, 45, 81, 135, 405
Factors of 210: 1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210
Add them all together
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