A:
Positive:
1 x 12115503731 x 390822743 x 281755997 x 1249021937 x 1293011333 x 908893007 x 402914171 x 29047
Negative:
-1 x -121155037-31 x -3908227-43 x -2817559-97 x -1249021-937 x -129301-1333 x -90889-3007 x -40291-4171 x -29047
Unfortunately, there's not simple formula to identifying all of the factors of a number and it can be a tedious process when trying to identify the divisors of larger numbers. To find the factor combinations of the number 121,155,037, it is easier to work with a table - it's called factoring from the outside in.
We start by creating a table and writing 1 on the left side and then the number we're trying to find the factors for on the right side in a table. Then, below that, write the numbers as a negative as well.
| 1 | 121,155,037 | |
| -1 | -121,155,037 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 121,155,037.
Example:
1 x 121,155,037 = 121,155,037
and
-1 x -121,155,037 = 121,155,037
Notice both answers equal 121,155,037
With that explanation out of the way, let's continue. Next, we take the number 121,155,037 and divide it by 2:
121,155,037 ÷ 2 = 60,577,518.5
If the quotient is a whole number, then 2 and 60,577,518.5 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.
Here is what our table should look like at this step:
| 1 | 121,155,037 | |
| -1 | -121,155,037 |
Now, we try dividing 121,155,037 by 3:
121,155,037 ÷ 3 = 40,385,012.3333
If the quotient is a whole number, then 3 and 40,385,012.3333 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.
Here is what our table should look like at this step:
| 1 | 121,155,037 | |
| -1 | -121,155,037 |
Let's try dividing by 4:
121,155,037 ÷ 4 = 30,288,759.25
If the quotient is a whole number, then 4 and 30,288,759.25 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.
Here is what our table should look like at this step:
| 1 | 121,155,037 | |
| -1 | 121,155,037 |
If you did it right, you will end up with this table:
| 1 | 31 | 43 | 97 | 937 | 1,333 | 3,007 | 4,171 | 29,047 | 40,291 | 90,889 | 129,301 | 1,249,021 | 2,817,559 | 3,908,227 | 121,155,037 |
| -1 | -31 | -43 | -97 | -937 | -1,333 | -3,007 | -4,171 | -29,047 | -40,291 | -90,889 | -129,301 | -1,249,021 | -2,817,559 | -3,908,227 | -121,155,037 |
Here are some more numbers to try:
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