A:
Positive:
1 x 12055326129 x 415700947 x 2564963241 x 500221367 x 3284831363 x 884476989 x 1724910643 x 11327
Negative:
-1 x -120553261-29 x -4157009-47 x -2564963-241 x -500221-367 x -328483-1363 x -88447-6989 x -17249-10643 x -11327
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 120,553,261, 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 | 120,553,261 | |
| -1 | -120,553,261 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 120,553,261.
Example:
1 x 120,553,261 = 120,553,261
and
-1 x -120,553,261 = 120,553,261
Notice both answers equal 120,553,261
With that explanation out of the way, let's continue. Next, we take the number 120,553,261 and divide it by 2:
120,553,261 ÷ 2 = 60,276,630.5
If the quotient is a whole number, then 2 and 60,276,630.5 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 | 120,553,261 | |
| -1 | -120,553,261 |
Now, we try dividing 120,553,261 by 3:
120,553,261 ÷ 3 = 40,184,420.3333
If the quotient is a whole number, then 3 and 40,184,420.3333 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 | 120,553,261 | |
| -1 | -120,553,261 |
Let's try dividing by 4:
120,553,261 ÷ 4 = 30,138,315.25
If the quotient is a whole number, then 4 and 30,138,315.25 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 | 120,553,261 | |
| -1 | 120,553,261 |
If you did it right, you will end up with this table:
| 1 | 29 | 47 | 241 | 367 | 1,363 | 6,989 | 10,643 | 11,327 | 17,249 | 88,447 | 328,483 | 500,221 | 2,564,963 | 4,157,009 | 120,553,261 |
| -1 | -29 | -47 | -241 | -367 | -1,363 | -6,989 | -10,643 | -11,327 | -17,249 | -88,447 | -328,483 | -500,221 | -2,564,963 | -4,157,009 | -120,553,261 |
Here are some more numbers to try:
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