A:
Positive:
1 x 1588878977 x 2269827129 x 5478893203 x 782699673 x 2360891163 x 1366194711 x 337278141 x 19517
Negative:
-1 x -158887897-7 x -22698271-29 x -5478893-203 x -782699-673 x -236089-1163 x -136619-4711 x -33727-8141 x -19517
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 158,887,897, 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 | 158,887,897 | |
| -1 | -158,887,897 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 158,887,897.
Example:
1 x 158,887,897 = 158,887,897
and
-1 x -158,887,897 = 158,887,897
Notice both answers equal 158,887,897
With that explanation out of the way, let's continue. Next, we take the number 158,887,897 and divide it by 2:
158,887,897 ÷ 2 = 79,443,948.5
If the quotient is a whole number, then 2 and 79,443,948.5 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 | 158,887,897 | |
| -1 | -158,887,897 |
Now, we try dividing 158,887,897 by 3:
158,887,897 ÷ 3 = 52,962,632.3333
If the quotient is a whole number, then 3 and 52,962,632.3333 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 | 158,887,897 | |
| -1 | -158,887,897 |
Let's try dividing by 4:
158,887,897 ÷ 4 = 39,721,974.25
If the quotient is a whole number, then 4 and 39,721,974.25 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 | 158,887,897 | |
| -1 | 158,887,897 |
If you did it right, you will end up with this table:
| 1 | 7 | 29 | 203 | 673 | 1,163 | 4,711 | 8,141 | 19,517 | 33,727 | 136,619 | 236,089 | 782,699 | 5,478,893 | 22,698,271 | 158,887,897 |
| -1 | -7 | -29 | -203 | -673 | -1,163 | -4,711 | -8,141 | -19,517 | -33,727 | -136,619 | -236,089 | -782,699 | -5,478,893 | -22,698,271 | -158,887,897 |
Here are some more numbers to try:
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