A:
Positive:
1 x 15531124923 x 6752663107 x 1451507223 x 696463283 x 5488032461 x 631095129 x 302816509 x 23861
Negative:
-1 x -155311249-23 x -6752663-107 x -1451507-223 x -696463-283 x -548803-2461 x -63109-5129 x -30281-6509 x -23861
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 155,311,249, 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 | 155,311,249 | |
| -1 | -155,311,249 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 155,311,249.
Example:
1 x 155,311,249 = 155,311,249
and
-1 x -155,311,249 = 155,311,249
Notice both answers equal 155,311,249
With that explanation out of the way, let's continue. Next, we take the number 155,311,249 and divide it by 2:
155,311,249 ÷ 2 = 77,655,624.5
If the quotient is a whole number, then 2 and 77,655,624.5 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 | 155,311,249 | |
| -1 | -155,311,249 |
Now, we try dividing 155,311,249 by 3:
155,311,249 ÷ 3 = 51,770,416.3333
If the quotient is a whole number, then 3 and 51,770,416.3333 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 | 155,311,249 | |
| -1 | -155,311,249 |
Let's try dividing by 4:
155,311,249 ÷ 4 = 38,827,812.25
If the quotient is a whole number, then 4 and 38,827,812.25 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 | 155,311,249 | |
| -1 | 155,311,249 |
If you did it right, you will end up with this table:
| 1 | 23 | 107 | 223 | 283 | 2,461 | 5,129 | 6,509 | 23,861 | 30,281 | 63,109 | 548,803 | 696,463 | 1,451,507 | 6,752,663 | 155,311,249 |
| -1 | -23 | -107 | -223 | -283 | -2,461 | -5,129 | -6,509 | -23,861 | -30,281 | -63,109 | -548,803 | -696,463 | -1,451,507 | -6,752,663 | -155,311,249 |
Here are some more numbers to try:
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