A:
Positive:
1 x 20212011129 x 696965953 x 3813587107 x 18889731229 x 1644591537 x 1315033103 x 651375671 x 35641
Negative:
-1 x -202120111-29 x -6969659-53 x -3813587-107 x -1888973-1229 x -164459-1537 x -131503-3103 x -65137-5671 x -35641
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 202,120,111, 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 | 202,120,111 | |
| -1 | -202,120,111 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 202,120,111.
Example:
1 x 202,120,111 = 202,120,111
and
-1 x -202,120,111 = 202,120,111
Notice both answers equal 202,120,111
With that explanation out of the way, let's continue. Next, we take the number 202,120,111 and divide it by 2:
202,120,111 ÷ 2 = 101,060,055.5
If the quotient is a whole number, then 2 and 101,060,055.5 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 | 202,120,111 | |
| -1 | -202,120,111 |
Now, we try dividing 202,120,111 by 3:
202,120,111 ÷ 3 = 67,373,370.3333
If the quotient is a whole number, then 3 and 67,373,370.3333 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 | 202,120,111 | |
| -1 | -202,120,111 |
Let's try dividing by 4:
202,120,111 ÷ 4 = 50,530,027.75
If the quotient is a whole number, then 4 and 50,530,027.75 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 | 202,120,111 | |
| -1 | 202,120,111 |
If you did it right, you will end up with this table:
| 1 | 29 | 53 | 107 | 1,229 | 1,537 | 3,103 | 5,671 | 35,641 | 65,137 | 131,503 | 164,459 | 1,888,973 | 3,813,587 | 6,969,659 | 202,120,111 |
| -1 | -29 | -53 | -107 | -1,229 | -1,537 | -3,103 | -5,671 | -35,641 | -65,137 | -131,503 | -164,459 | -1,888,973 | -3,813,587 | -6,969,659 | -202,120,111 |
Here are some more numbers to try:
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