A:
Positive:
1 x 4021430455 x 8042860947 x 855623567 x 6002135235 x 1711247335 x 12004273149 x 12770515745 x 25541
Negative:
-1 x -402143045-5 x -80428609-47 x -8556235-67 x -6002135-235 x -1711247-335 x -1200427-3149 x -127705-15745 x -25541
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 402,143,045, 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 | 402,143,045 | |
| -1 | -402,143,045 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 402,143,045.
Example:
1 x 402,143,045 = 402,143,045
and
-1 x -402,143,045 = 402,143,045
Notice both answers equal 402,143,045
With that explanation out of the way, let's continue. Next, we take the number 402,143,045 and divide it by 2:
402,143,045 ÷ 2 = 201,071,522.5
If the quotient is a whole number, then 2 and 201,071,522.5 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 | 402,143,045 | |
| -1 | -402,143,045 |
Now, we try dividing 402,143,045 by 3:
402,143,045 ÷ 3 = 134,047,681.6667
If the quotient is a whole number, then 3 and 134,047,681.6667 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 | 402,143,045 | |
| -1 | -402,143,045 |
Let's try dividing by 4:
402,143,045 ÷ 4 = 100,535,761.25
If the quotient is a whole number, then 4 and 100,535,761.25 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 | 402,143,045 | |
| -1 | 402,143,045 |
If you did it right, you will end up with this table:
| 1 | 5 | 47 | 67 | 235 | 335 | 3,149 | 15,745 | 25,541 | 127,705 | 1,200,427 | 1,711,247 | 6,002,135 | 8,556,235 | 80,428,609 | 402,143,045 |
| -1 | -5 | -47 | -67 | -235 | -335 | -3,149 | -15,745 | -25,541 | -127,705 | -1,200,427 | -1,711,247 | -6,002,135 | -8,556,235 | -80,428,609 | -402,143,045 |
Here are some more numbers to try:
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