A:
Positive:
1 x 870716355 x 174143277 x 1243880535 x 2487761619 x 1406653095 x 281334019 x 216654333 x 20095
Negative:
-1 x -87071635-5 x -17414327-7 x -12438805-35 x -2487761-619 x -140665-3095 x -28133-4019 x -21665-4333 x -20095
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 87,071,635, 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 | 87,071,635 | |
| -1 | -87,071,635 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 87,071,635.
Example:
1 x 87,071,635 = 87,071,635
and
-1 x -87,071,635 = 87,071,635
Notice both answers equal 87,071,635
With that explanation out of the way, let's continue. Next, we take the number 87,071,635 and divide it by 2:
87,071,635 ÷ 2 = 43,535,817.5
If the quotient is a whole number, then 2 and 43,535,817.5 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 | 87,071,635 | |
| -1 | -87,071,635 |
Now, we try dividing 87,071,635 by 3:
87,071,635 ÷ 3 = 29,023,878.3333
If the quotient is a whole number, then 3 and 29,023,878.3333 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 | 87,071,635 | |
| -1 | -87,071,635 |
Let's try dividing by 4:
87,071,635 ÷ 4 = 21,767,908.75
If the quotient is a whole number, then 4 and 21,767,908.75 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 | 87,071,635 | |
| -1 | 87,071,635 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 619 | 3,095 | 4,019 | 4,333 | 20,095 | 21,665 | 28,133 | 140,665 | 2,487,761 | 12,438,805 | 17,414,327 | 87,071,635 |
| -1 | -5 | -7 | -35 | -619 | -3,095 | -4,019 | -4,333 | -20,095 | -21,665 | -28,133 | -140,665 | -2,487,761 | -12,438,805 | -17,414,327 | -87,071,635 |
Here are some more numbers to try:
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