A:
Positive:
1 x 4201255311 x 381932319 x 2211187179 x 234707209 x 2010171123 x 374111969 x 213373401 x 12353
Negative:
-1 x -42012553-11 x -3819323-19 x -2211187-179 x -234707-209 x -201017-1123 x -37411-1969 x -21337-3401 x -12353
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 42,012,553, 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 | 42,012,553 | |
| -1 | -42,012,553 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 42,012,553.
Example:
1 x 42,012,553 = 42,012,553
and
-1 x -42,012,553 = 42,012,553
Notice both answers equal 42,012,553
With that explanation out of the way, let's continue. Next, we take the number 42,012,553 and divide it by 2:
42,012,553 ÷ 2 = 21,006,276.5
If the quotient is a whole number, then 2 and 21,006,276.5 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 | 42,012,553 | |
| -1 | -42,012,553 |
Now, we try dividing 42,012,553 by 3:
42,012,553 ÷ 3 = 14,004,184.3333
If the quotient is a whole number, then 3 and 14,004,184.3333 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 | 42,012,553 | |
| -1 | -42,012,553 |
Let's try dividing by 4:
42,012,553 ÷ 4 = 10,503,138.25
If the quotient is a whole number, then 4 and 10,503,138.25 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 | 42,012,553 | |
| -1 | 42,012,553 |
If you did it right, you will end up with this table:
| 1 | 11 | 19 | 179 | 209 | 1,123 | 1,969 | 3,401 | 12,353 | 21,337 | 37,411 | 201,017 | 234,707 | 2,211,187 | 3,819,323 | 42,012,553 |
| -1 | -11 | -19 | -179 | -209 | -1,123 | -1,969 | -3,401 | -12,353 | -21,337 | -37,411 | -201,017 | -234,707 | -2,211,187 | -3,819,323 | -42,012,553 |
Here are some more numbers to try:
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