A:
Positive:
1 x 838205455 x 1676410943 x 1949315197 x 425485215 x 389863985 x 850971979 x 423558471 x 9895
Negative:
-1 x -83820545-5 x -16764109-43 x -1949315-197 x -425485-215 x -389863-985 x -85097-1979 x -42355-8471 x -9895
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 83,820,545, 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 | 83,820,545 | |
| -1 | -83,820,545 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 83,820,545.
Example:
1 x 83,820,545 = 83,820,545
and
-1 x -83,820,545 = 83,820,545
Notice both answers equal 83,820,545
With that explanation out of the way, let's continue. Next, we take the number 83,820,545 and divide it by 2:
83,820,545 ÷ 2 = 41,910,272.5
If the quotient is a whole number, then 2 and 41,910,272.5 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 | 83,820,545 | |
| -1 | -83,820,545 |
Now, we try dividing 83,820,545 by 3:
83,820,545 ÷ 3 = 27,940,181.6667
If the quotient is a whole number, then 3 and 27,940,181.6667 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 | 83,820,545 | |
| -1 | -83,820,545 |
Let's try dividing by 4:
83,820,545 ÷ 4 = 20,955,136.25
If the quotient is a whole number, then 4 and 20,955,136.25 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 | 83,820,545 | |
| -1 | 83,820,545 |
If you did it right, you will end up with this table:
| 1 | 5 | 43 | 197 | 215 | 985 | 1,979 | 8,471 | 9,895 | 42,355 | 85,097 | 389,863 | 425,485 | 1,949,315 | 16,764,109 | 83,820,545 |
| -1 | -5 | -43 | -197 | -215 | -985 | -1,979 | -8,471 | -9,895 | -42,355 | -85,097 | -389,863 | -425,485 | -1,949,315 | -16,764,109 | -83,820,545 |
Here are some more numbers to try:
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