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Sum Squared Divisors, Get Number (Posted on 2007-05-03) Difficulty: 4 of 5
Determine all possible positive whole numbers t such that t is equal to the sum of the squares of its four smallest positive divisors including 1.

For example, 1, 2, 4 and 5 are the four smallest positive divisors of 40.
But, 12 + 22 + 42+ 52 = 46. So, t = 40 is NOT a valid solution.

See The Solution Submitted by K Sengupta    
Rating: 4.0000 (1 votes)

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One number that works | Comment 1 of 6
130 is the sum of the squares of 1, 2, 5 & 10
  Posted by Jer on 2007-05-03 13:19:49
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