A:
Positive:
1 x 312558655 x 6251173103 x 303455137 x 228145443 x 70555515 x 60691685 x 456292215 x 14111
Negative:
-1 x -31255865-5 x -6251173-103 x -303455-137 x -228145-443 x -70555-515 x -60691-685 x -45629-2215 x -14111
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 31,255,865, 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 | 31,255,865 | |
| -1 | -31,255,865 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 31,255,865.
Example:
1 x 31,255,865 = 31,255,865
and
-1 x -31,255,865 = 31,255,865
Notice both answers equal 31,255,865
With that explanation out of the way, let's continue. Next, we take the number 31,255,865 and divide it by 2:
31,255,865 ÷ 2 = 15,627,932.5
If the quotient is a whole number, then 2 and 15,627,932.5 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 | 31,255,865 | |
| -1 | -31,255,865 |
Now, we try dividing 31,255,865 by 3:
31,255,865 ÷ 3 = 10,418,621.6667
If the quotient is a whole number, then 3 and 10,418,621.6667 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 | 31,255,865 | |
| -1 | -31,255,865 |
Let's try dividing by 4:
31,255,865 ÷ 4 = 7,813,966.25
If the quotient is a whole number, then 4 and 7,813,966.25 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 | 31,255,865 | |
| -1 | 31,255,865 |
If you did it right, you will end up with this table:
| 1 | 5 | 103 | 137 | 443 | 515 | 685 | 2,215 | 14,111 | 45,629 | 60,691 | 70,555 | 228,145 | 303,455 | 6,251,173 | 31,255,865 |
| -1 | -5 | -103 | -137 | -443 | -515 | -685 | -2,215 | -14,111 | -45,629 | -60,691 | -70,555 | -228,145 | -303,455 | -6,251,173 | -31,255,865 |
Here are some more numbers to try:
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