A:
Positive:
1 x 65704763947 x 1397973797 x 6773687167 x 3934417863 x 7613534559 x 1441217849 x 8371116199 x 40561
Negative:
-1 x -657047639-47 x -13979737-97 x -6773687-167 x -3934417-863 x -761353-4559 x -144121-7849 x -83711-16199 x -40561
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 657,047,639, 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 | 657,047,639 | |
| -1 | -657,047,639 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 657,047,639.
Example:
1 x 657,047,639 = 657,047,639
and
-1 x -657,047,639 = 657,047,639
Notice both answers equal 657,047,639
With that explanation out of the way, let's continue. Next, we take the number 657,047,639 and divide it by 2:
657,047,639 ÷ 2 = 328,523,819.5
If the quotient is a whole number, then 2 and 328,523,819.5 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 | 657,047,639 | |
| -1 | -657,047,639 |
Now, we try dividing 657,047,639 by 3:
657,047,639 ÷ 3 = 219,015,879.6667
If the quotient is a whole number, then 3 and 219,015,879.6667 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 | 657,047,639 | |
| -1 | -657,047,639 |
Let's try dividing by 4:
657,047,639 ÷ 4 = 164,261,909.75
If the quotient is a whole number, then 4 and 164,261,909.75 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 | 657,047,639 | |
| -1 | 657,047,639 |
If you did it right, you will end up with this table:
| 1 | 47 | 97 | 167 | 863 | 4,559 | 7,849 | 16,199 | 40,561 | 83,711 | 144,121 | 761,353 | 3,934,417 | 6,773,687 | 13,979,737 | 657,047,639 |
| -1 | -47 | -97 | -167 | -863 | -4,559 | -7,849 | -16,199 | -40,561 | -83,711 | -144,121 | -761,353 | -3,934,417 | -6,773,687 | -13,979,737 | -657,047,639 |
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