A:
Positive:
1 x 1624448217 x 2320640311 x 1476771177 x 2109673197 x 8245931379 x 1177992167 x 7496310709 x 15169
Negative:
-1 x -162444821-7 x -23206403-11 x -14767711-77 x -2109673-197 x -824593-1379 x -117799-2167 x -74963-10709 x -15169
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 162,444,821, 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 | 162,444,821 | |
| -1 | -162,444,821 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 162,444,821.
Example:
1 x 162,444,821 = 162,444,821
and
-1 x -162,444,821 = 162,444,821
Notice both answers equal 162,444,821
With that explanation out of the way, let's continue. Next, we take the number 162,444,821 and divide it by 2:
162,444,821 ÷ 2 = 81,222,410.5
If the quotient is a whole number, then 2 and 81,222,410.5 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 | 162,444,821 | |
| -1 | -162,444,821 |
Now, we try dividing 162,444,821 by 3:
162,444,821 ÷ 3 = 54,148,273.6667
If the quotient is a whole number, then 3 and 54,148,273.6667 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 | 162,444,821 | |
| -1 | -162,444,821 |
Let's try dividing by 4:
162,444,821 ÷ 4 = 40,611,205.25
If the quotient is a whole number, then 4 and 40,611,205.25 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 | 162,444,821 | |
| -1 | 162,444,821 |
If you did it right, you will end up with this table:
| 1 | 7 | 11 | 77 | 197 | 1,379 | 2,167 | 10,709 | 15,169 | 74,963 | 117,799 | 824,593 | 2,109,673 | 14,767,711 | 23,206,403 | 162,444,821 |
| -1 | -7 | -11 | -77 | -197 | -1,379 | -2,167 | -10,709 | -15,169 | -74,963 | -117,799 | -824,593 | -2,109,673 | -14,767,711 | -23,206,403 | -162,444,821 |
Here are some more numbers to try:
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