A:
Positive:
1 x 1620672137 x 2315245911 x 1473338377 x 2104769467 x 3470393269 x 495774507 x 359595137 x 31549
Negative:
-1 x -162067213-7 x -23152459-11 x -14733383-77 x -2104769-467 x -347039-3269 x -49577-4507 x -35959-5137 x -31549
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 162,067,213, 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 | 162,067,213 | |
| -1 | -162,067,213 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 162,067,213.
Example:
1 x 162,067,213 = 162,067,213
and
-1 x -162,067,213 = 162,067,213
Notice both answers equal 162,067,213
With that explanation out of the way, let's continue. Next, we take the number 162,067,213 and divide it by 2:
162,067,213 ÷ 2 = 81,033,606.5
If the quotient is a whole number, then 2 and 81,033,606.5 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 | 162,067,213 | |
| -1 | -162,067,213 |
Now, we try dividing 162,067,213 by 3:
162,067,213 ÷ 3 = 54,022,404.3333
If the quotient is a whole number, then 3 and 54,022,404.3333 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 | 162,067,213 | |
| -1 | -162,067,213 |
Let's try dividing by 4:
162,067,213 ÷ 4 = 40,516,803.25
If the quotient is a whole number, then 4 and 40,516,803.25 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 | 162,067,213 | |
| -1 | 162,067,213 |
If you did it right, you will end up with this table:
| 1 | 7 | 11 | 77 | 467 | 3,269 | 4,507 | 5,137 | 31,549 | 35,959 | 49,577 | 347,039 | 2,104,769 | 14,733,383 | 23,152,459 | 162,067,213 |
| -1 | -7 | -11 | -77 | -467 | -3,269 | -4,507 | -5,137 | -31,549 | -35,959 | -49,577 | -347,039 | -2,104,769 | -14,733,383 | -23,152,459 | -162,067,213 |
Here are some more numbers to try:
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