A:
Positive:
1 x 768717255 x 153743457 x 1098167525 x 307486935 x 2196335175 x 439267509 x 151025863 x 890752545 x 302053563 x 215754315 x 178156041 x 12725
Negative:
-1 x -76871725-5 x -15374345-7 x -10981675-25 x -3074869-35 x -2196335-175 x -439267-509 x -151025-863 x -89075-2545 x -30205-3563 x -21575-4315 x -17815-6041 x -12725
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 76,871,725, 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 | 76,871,725 | |
| -1 | -76,871,725 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 76,871,725.
Example:
1 x 76,871,725 = 76,871,725
and
-1 x -76,871,725 = 76,871,725
Notice both answers equal 76,871,725
With that explanation out of the way, let's continue. Next, we take the number 76,871,725 and divide it by 2:
76,871,725 ÷ 2 = 38,435,862.5
If the quotient is a whole number, then 2 and 38,435,862.5 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 | 76,871,725 | |
| -1 | -76,871,725 |
Now, we try dividing 76,871,725 by 3:
76,871,725 ÷ 3 = 25,623,908.3333
If the quotient is a whole number, then 3 and 25,623,908.3333 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 | 76,871,725 | |
| -1 | -76,871,725 |
Let's try dividing by 4:
76,871,725 ÷ 4 = 19,217,931.25
If the quotient is a whole number, then 4 and 19,217,931.25 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 | 76,871,725 | |
| -1 | 76,871,725 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 25 | 35 | 175 | 509 | 863 | 2,545 | 3,563 | 4,315 | 6,041 | 12,725 | 17,815 | 21,575 | 30,205 | 89,075 | 151,025 | 439,267 | 2,196,335 | 3,074,869 | 10,981,675 | 15,374,345 | 76,871,725 |
| -1 | -5 | -7 | -25 | -35 | -175 | -509 | -863 | -2,545 | -3,563 | -4,315 | -6,041 | -12,725 | -17,815 | -21,575 | -30,205 | -89,075 | -151,025 | -439,267 | -2,196,335 | -3,074,869 | -10,981,675 | -15,374,345 | -76,871,725 |
Here are some more numbers to try:
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