Question 11

Which of these numbers has the most number of divisors?

Solution

Divisors of =

240 = 1 2 3 4 5 6 8 10 12 15 16 20 24 30 40 48 60 80 120 240

156 = 1 2 3 4 6 12 13 26 39 52 78 156

200 = 1 2 4 5 8 10 20 25 40 50 100 200

172 = 1 2 4 43 86 172

clearly 240 is the ans.

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