A:
Positive:
1 x 40266055713 x 3097388943 x 936419953 x 7597369559 x 720323689 x 5844132279 x 17668313591 x 29627
Negative:
-1 x -402660557-13 x -30973889-43 x -9364199-53 x -7597369-559 x -720323-689 x -584413-2279 x -176683-13591 x -29627
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 402,660,557, 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 | 402,660,557 | |
| -1 | -402,660,557 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 402,660,557.
Example:
1 x 402,660,557 = 402,660,557
and
-1 x -402,660,557 = 402,660,557
Notice both answers equal 402,660,557
With that explanation out of the way, let's continue. Next, we take the number 402,660,557 and divide it by 2:
402,660,557 ÷ 2 = 201,330,278.5
If the quotient is a whole number, then 2 and 201,330,278.5 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 | 402,660,557 | |
| -1 | -402,660,557 |
Now, we try dividing 402,660,557 by 3:
402,660,557 ÷ 3 = 134,220,185.6667
If the quotient is a whole number, then 3 and 134,220,185.6667 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 | 402,660,557 | |
| -1 | -402,660,557 |
Let's try dividing by 4:
402,660,557 ÷ 4 = 100,665,139.25
If the quotient is a whole number, then 4 and 100,665,139.25 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 | 402,660,557 | |
| -1 | 402,660,557 |
If you did it right, you will end up with this table:
| 1 | 13 | 43 | 53 | 559 | 689 | 2,279 | 13,591 | 29,627 | 176,683 | 584,413 | 720,323 | 7,597,369 | 9,364,199 | 30,973,889 | 402,660,557 |
| -1 | -13 | -43 | -53 | -559 | -689 | -2,279 | -13,591 | -29,627 | -176,683 | -584,413 | -720,323 | -7,597,369 | -9,364,199 | -30,973,889 | -402,660,557 |
Here are some more numbers to try:
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