A:
Positive:
1 x 1201430455 x 2402860911 x 1092209547 x 255623555 x 2184419235 x 511247517 x 2323852585 x 46477
Negative:
-1 x -120143045-5 x -24028609-11 x -10922095-47 x -2556235-55 x -2184419-235 x -511247-517 x -232385-2585 x -46477
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 120,143,045, 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 | 120,143,045 | |
| -1 | -120,143,045 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 120,143,045.
Example:
1 x 120,143,045 = 120,143,045
and
-1 x -120,143,045 = 120,143,045
Notice both answers equal 120,143,045
With that explanation out of the way, let's continue. Next, we take the number 120,143,045 and divide it by 2:
120,143,045 ÷ 2 = 60,071,522.5
If the quotient is a whole number, then 2 and 60,071,522.5 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 | 120,143,045 | |
| -1 | -120,143,045 |
Now, we try dividing 120,143,045 by 3:
120,143,045 ÷ 3 = 40,047,681.6667
If the quotient is a whole number, then 3 and 40,047,681.6667 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 | 120,143,045 | |
| -1 | -120,143,045 |
Let's try dividing by 4:
120,143,045 ÷ 4 = 30,035,761.25
If the quotient is a whole number, then 4 and 30,035,761.25 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 | 120,143,045 | |
| -1 | 120,143,045 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 47 | 55 | 235 | 517 | 2,585 | 46,477 | 232,385 | 511,247 | 2,184,419 | 2,556,235 | 10,922,095 | 24,028,609 | 120,143,045 |
| -1 | -5 | -11 | -47 | -55 | -235 | -517 | -2,585 | -46,477 | -232,385 | -511,247 | -2,184,419 | -2,556,235 | -10,922,095 | -24,028,609 | -120,143,045 |
Here are some more numbers to try:
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