A:
Positive:
1 x 877845355 x 1755690737 x 237255583 x 1057645185 x 474511415 x 2115293071 x 285855717 x 15355
Negative:
-1 x -87784535-5 x -17556907-37 x -2372555-83 x -1057645-185 x -474511-415 x -211529-3071 x -28585-5717 x -15355
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 87,784,535, 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 | 87,784,535 | |
| -1 | -87,784,535 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 87,784,535.
Example:
1 x 87,784,535 = 87,784,535
and
-1 x -87,784,535 = 87,784,535
Notice both answers equal 87,784,535
With that explanation out of the way, let's continue. Next, we take the number 87,784,535 and divide it by 2:
87,784,535 ÷ 2 = 43,892,267.5
If the quotient is a whole number, then 2 and 43,892,267.5 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 | 87,784,535 | |
| -1 | -87,784,535 |
Now, we try dividing 87,784,535 by 3:
87,784,535 ÷ 3 = 29,261,511.6667
If the quotient is a whole number, then 3 and 29,261,511.6667 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 | 87,784,535 | |
| -1 | -87,784,535 |
Let's try dividing by 4:
87,784,535 ÷ 4 = 21,946,133.75
If the quotient is a whole number, then 4 and 21,946,133.75 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 | 87,784,535 | |
| -1 | 87,784,535 |
If you did it right, you will end up with this table:
| 1 | 5 | 37 | 83 | 185 | 415 | 3,071 | 5,717 | 15,355 | 28,585 | 211,529 | 474,511 | 1,057,645 | 2,372,555 | 17,556,907 | 87,784,535 |
| -1 | -5 | -37 | -83 | -185 | -415 | -3,071 | -5,717 | -15,355 | -28,585 | -211,529 | -474,511 | -1,057,645 | -2,372,555 | -17,556,907 | -87,784,535 |
Here are some more numbers to try:
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