A:
Positive:
1 x 1210247655 x 2420495347 x 2574995101 x 1198265235 x 514999505 x 2396534747 x 254955099 x 23735
Negative:
-1 x -121024765-5 x -24204953-47 x -2574995-101 x -1198265-235 x -514999-505 x -239653-4747 x -25495-5099 x -23735
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 121,024,765, 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 | 121,024,765 | |
| -1 | -121,024,765 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 121,024,765.
Example:
1 x 121,024,765 = 121,024,765
and
-1 x -121,024,765 = 121,024,765
Notice both answers equal 121,024,765
With that explanation out of the way, let's continue. Next, we take the number 121,024,765 and divide it by 2:
121,024,765 ÷ 2 = 60,512,382.5
If the quotient is a whole number, then 2 and 60,512,382.5 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 | 121,024,765 | |
| -1 | -121,024,765 |
Now, we try dividing 121,024,765 by 3:
121,024,765 ÷ 3 = 40,341,588.3333
If the quotient is a whole number, then 3 and 40,341,588.3333 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 | 121,024,765 | |
| -1 | -121,024,765 |
Let's try dividing by 4:
121,024,765 ÷ 4 = 30,256,191.25
If the quotient is a whole number, then 4 and 30,256,191.25 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 | 121,024,765 | |
| -1 | 121,024,765 |
If you did it right, you will end up with this table:
| 1 | 5 | 47 | 101 | 235 | 505 | 4,747 | 5,099 | 23,735 | 25,495 | 239,653 | 514,999 | 1,198,265 | 2,574,995 | 24,204,953 | 121,024,765 |
| -1 | -5 | -47 | -101 | -235 | -505 | -4,747 | -5,099 | -23,735 | -25,495 | -239,653 | -514,999 | -1,198,265 | -2,574,995 | -24,204,953 | -121,024,765 |
Here are some more numbers to try:
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