Four number-pairs have been given, out of which three are alike in some manner and one is different. Select the odd one.

4 : 17 11 : 122 5 : 26 13 : 175

13 : 175

4 : 17 → 42 + 1 = 17 11 : 122 → 112 + 1 = 122 5 : 26 → 52 + 1 = 26 13 : 175 → 132 + 1 = 170  ≠ 175 (odd)