1 & 98, 2 & 49, 7 & 14
There are six: 1 2 7 14 49 98.
1 and 2.
98 - 71 - 1 = 26
There are infinitely many pairs. One such is 1 and 98.
1, 2, 7, 14, 49, 98
1, 2, 7, 14, 49, 98
1, 2, 7, 14, 49, 98.
98 = 2 x 7 x 7
1 & 98, 2 & 49, 7 & 14
98 - 71 - 1 = 26
70, 98.
98
49 of them.
98
2...99 and 100...98 and 101 are not counted
51