0
It can be expressed as 530/1.
The positive integer factors of 530 are:
1, 2, 5, 10, 53, 106, 265, 530
530 is the integer whose rational form is 530/1. Since the denominator is 1, it cannot be scaled down.
1, 101
1, 2, 5, 10, 53, 106, 265, 530.