There are infinitely many facts. Some of these are:
1 * 10
100 * 0.2
50 * 0.4
None
1 x 21 3 x 7 7 x 3 21 x 1
30x1 15x2 10x3
10*4=40
1 times 4
-2 x 3
11
1*114 = 114 is one such fact.
1 x 25, 5 x 5.
1 and 98 2 and 49 7 and 14
Product of its prime factors are: 3*3*5 = 45
If you are talking about factors, 1 and 61, because 61 is a prime number.