A:
Positive:
1 x 1580880655 x 3161761331 x 5099615155 x 1019923661 x 2391651543 x 1024553305 x 478337715 x 20491
Negative:
-1 x -158088065-5 x -31617613-31 x -5099615-155 x -1019923-661 x -239165-1543 x -102455-3305 x -47833-7715 x -20491
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 158,088,065, 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 | 158,088,065 | |
| -1 | -158,088,065 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 158,088,065.
Example:
1 x 158,088,065 = 158,088,065
and
-1 x -158,088,065 = 158,088,065
Notice both answers equal 158,088,065
With that explanation out of the way, let's continue. Next, we take the number 158,088,065 and divide it by 2:
158,088,065 ÷ 2 = 79,044,032.5
If the quotient is a whole number, then 2 and 79,044,032.5 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 | 158,088,065 | |
| -1 | -158,088,065 |
Now, we try dividing 158,088,065 by 3:
158,088,065 ÷ 3 = 52,696,021.6667
If the quotient is a whole number, then 3 and 52,696,021.6667 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 | 158,088,065 | |
| -1 | -158,088,065 |
Let's try dividing by 4:
158,088,065 ÷ 4 = 39,522,016.25
If the quotient is a whole number, then 4 and 39,522,016.25 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 | 158,088,065 | |
| -1 | 158,088,065 |
If you did it right, you will end up with this table:
| 1 | 5 | 31 | 155 | 661 | 1,543 | 3,305 | 7,715 | 20,491 | 47,833 | 102,455 | 239,165 | 1,019,923 | 5,099,615 | 31,617,613 | 158,088,065 |
| -1 | -5 | -31 | -155 | -661 | -1,543 | -3,305 | -7,715 | -20,491 | -47,833 | -102,455 | -239,165 | -1,019,923 | -5,099,615 | -31,617,613 | -158,088,065 |
Here are some more numbers to try:
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