A:
Positive:
1 x 875634655 x 1751269311 x 796031555 x 1592063101 x 866965121 x 723665505 x 173393605 x 1447331111 x 788151433 x 611055555 x 157637165 x 12221
Negative:
-1 x -87563465-5 x -17512693-11 x -7960315-55 x -1592063-101 x -866965-121 x -723665-505 x -173393-605 x -144733-1111 x -78815-1433 x -61105-5555 x -15763-7165 x -12221
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 87,563,465, 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 | 87,563,465 | |
| -1 | -87,563,465 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 87,563,465.
Example:
1 x 87,563,465 = 87,563,465
and
-1 x -87,563,465 = 87,563,465
Notice both answers equal 87,563,465
With that explanation out of the way, let's continue. Next, we take the number 87,563,465 and divide it by 2:
87,563,465 ÷ 2 = 43,781,732.5
If the quotient is a whole number, then 2 and 43,781,732.5 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 | 87,563,465 | |
| -1 | -87,563,465 |
Now, we try dividing 87,563,465 by 3:
87,563,465 ÷ 3 = 29,187,821.6667
If the quotient is a whole number, then 3 and 29,187,821.6667 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 | 87,563,465 | |
| -1 | -87,563,465 |
Let's try dividing by 4:
87,563,465 ÷ 4 = 21,890,866.25
If the quotient is a whole number, then 4 and 21,890,866.25 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 | 87,563,465 | |
| -1 | 87,563,465 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 55 | 101 | 121 | 505 | 605 | 1,111 | 1,433 | 5,555 | 7,165 | 12,221 | 15,763 | 61,105 | 78,815 | 144,733 | 173,393 | 723,665 | 866,965 | 1,592,063 | 7,960,315 | 17,512,693 | 87,563,465 |
| -1 | -5 | -11 | -55 | -101 | -121 | -505 | -605 | -1,111 | -1,433 | -5,555 | -7,165 | -12,221 | -15,763 | -61,105 | -78,815 | -144,733 | -173,393 | -723,665 | -866,965 | -1,592,063 | -7,960,315 | -17,512,693 | -87,563,465 |
Here are some more numbers to try:
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