A:
Positive:
1 x 1625000155 x 3250000341 x 3963415205 x 792683283 x 5742051415 x 1148412801 x 5801511603 x 14005
Negative:
-1 x -162500015-5 x -32500003-41 x -3963415-205 x -792683-283 x -574205-1415 x -114841-2801 x -58015-11603 x -14005
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 162,500,015, 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 | 162,500,015 | |
| -1 | -162,500,015 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 162,500,015.
Example:
1 x 162,500,015 = 162,500,015
and
-1 x -162,500,015 = 162,500,015
Notice both answers equal 162,500,015
With that explanation out of the way, let's continue. Next, we take the number 162,500,015 and divide it by 2:
162,500,015 ÷ 2 = 81,250,007.5
If the quotient is a whole number, then 2 and 81,250,007.5 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 | 162,500,015 | |
| -1 | -162,500,015 |
Now, we try dividing 162,500,015 by 3:
162,500,015 ÷ 3 = 54,166,671.6667
If the quotient is a whole number, then 3 and 54,166,671.6667 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 | 162,500,015 | |
| -1 | -162,500,015 |
Let's try dividing by 4:
162,500,015 ÷ 4 = 40,625,003.75
If the quotient is a whole number, then 4 and 40,625,003.75 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 | 162,500,015 | |
| -1 | 162,500,015 |
If you did it right, you will end up with this table:
| 1 | 5 | 41 | 205 | 283 | 1,415 | 2,801 | 11,603 | 14,005 | 58,015 | 114,841 | 574,205 | 792,683 | 3,963,415 | 32,500,003 | 162,500,015 |
| -1 | -5 | -41 | -205 | -283 | -1,415 | -2,801 | -11,603 | -14,005 | -58,015 | -114,841 | -574,205 | -792,683 | -3,963,415 | -32,500,003 | -162,500,015 |
Here are some more numbers to try:
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