A:
Positive:
1 x 12104560731 x 390469773 x 165815989 x 1360063601 x 2014072263 x 534892759 x 438736497 x 18631
Negative:
-1 x -121045607-31 x -3904697-73 x -1658159-89 x -1360063-601 x -201407-2263 x -53489-2759 x -43873-6497 x -18631
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 121,045,607, 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 | 121,045,607 | |
| -1 | -121,045,607 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 121,045,607.
Example:
1 x 121,045,607 = 121,045,607
and
-1 x -121,045,607 = 121,045,607
Notice both answers equal 121,045,607
With that explanation out of the way, let's continue. Next, we take the number 121,045,607 and divide it by 2:
121,045,607 ÷ 2 = 60,522,803.5
If the quotient is a whole number, then 2 and 60,522,803.5 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 | 121,045,607 | |
| -1 | -121,045,607 |
Now, we try dividing 121,045,607 by 3:
121,045,607 ÷ 3 = 40,348,535.6667
If the quotient is a whole number, then 3 and 40,348,535.6667 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 | 121,045,607 | |
| -1 | -121,045,607 |
Let's try dividing by 4:
121,045,607 ÷ 4 = 30,261,401.75
If the quotient is a whole number, then 4 and 30,261,401.75 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 | 121,045,607 | |
| -1 | 121,045,607 |
If you did it right, you will end up with this table:
| 1 | 31 | 73 | 89 | 601 | 2,263 | 2,759 | 6,497 | 18,631 | 43,873 | 53,489 | 201,407 | 1,360,063 | 1,658,159 | 3,904,697 | 121,045,607 |
| -1 | -31 | -73 | -89 | -601 | -2,263 | -2,759 | -6,497 | -18,631 | -43,873 | -53,489 | -201,407 | -1,360,063 | -1,658,159 | -3,904,697 | -121,045,607 |
Here are some more numbers to try:
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