2&6
13 x 1
There is an infinite number of combinations to do this. The most obvious is 1 x 73
1 x 169 13 x 13
-1
-1
-1
There is an infinite combination of numbers you can use to multiply that will result in 29. However, no whole numbers can be multiplied to result in 29. Instead, multiply a fraction or decimal. For example: 2 and 14.5 or 14 1/2.
1 and 19
1 and 5.
1 and 19
1 and 31
How about 40 and 1.