A:
Positive:
1 x 913133655 x 1826267311 x 830121513 x 702410555 x 166024365 x 1404821143 x 638555715 x 127711
Negative:
-1 x -91313365-5 x -18262673-11 x -8301215-13 x -7024105-55 x -1660243-65 x -1404821-143 x -638555-715 x -127711
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 91,313,365, 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 | 91,313,365 | |
| -1 | -91,313,365 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 91,313,365.
Example:
1 x 91,313,365 = 91,313,365
and
-1 x -91,313,365 = 91,313,365
Notice both answers equal 91,313,365
With that explanation out of the way, let's continue. Next, we take the number 91,313,365 and divide it by 2:
91,313,365 ÷ 2 = 45,656,682.5
If the quotient is a whole number, then 2 and 45,656,682.5 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 | 91,313,365 | |
| -1 | -91,313,365 |
Now, we try dividing 91,313,365 by 3:
91,313,365 ÷ 3 = 30,437,788.3333
If the quotient is a whole number, then 3 and 30,437,788.3333 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 | 91,313,365 | |
| -1 | -91,313,365 |
Let's try dividing by 4:
91,313,365 ÷ 4 = 22,828,341.25
If the quotient is a whole number, then 4 and 22,828,341.25 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 | 91,313,365 | |
| -1 | 91,313,365 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 13 | 55 | 65 | 143 | 715 | 127,711 | 638,555 | 1,404,821 | 1,660,243 | 7,024,105 | 8,301,215 | 18,262,673 | 91,313,365 |
| -1 | -5 | -11 | -13 | -55 | -65 | -143 | -715 | -127,711 | -638,555 | -1,404,821 | -1,660,243 | -7,024,105 | -8,301,215 | -18,262,673 | -91,313,365 |
Here are some more numbers to try:
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