A:
Positive:
1 x 40214571111 x 3655870137 x 1086880359 x 6816029407 x 988073649 x 6196392183 x 18421716747 x 24013
Negative:
-1 x -402145711-11 x -36558701-37 x -10868803-59 x -6816029-407 x -988073-649 x -619639-2183 x -184217-16747 x -24013
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 402,145,711, 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 | 402,145,711 | |
| -1 | -402,145,711 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 402,145,711.
Example:
1 x 402,145,711 = 402,145,711
and
-1 x -402,145,711 = 402,145,711
Notice both answers equal 402,145,711
With that explanation out of the way, let's continue. Next, we take the number 402,145,711 and divide it by 2:
402,145,711 ÷ 2 = 201,072,855.5
If the quotient is a whole number, then 2 and 201,072,855.5 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 | 402,145,711 | |
| -1 | -402,145,711 |
Now, we try dividing 402,145,711 by 3:
402,145,711 ÷ 3 = 134,048,570.3333
If the quotient is a whole number, then 3 and 134,048,570.3333 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 | 402,145,711 | |
| -1 | -402,145,711 |
Let's try dividing by 4:
402,145,711 ÷ 4 = 100,536,427.75
If the quotient is a whole number, then 4 and 100,536,427.75 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 | 402,145,711 | |
| -1 | 402,145,711 |
If you did it right, you will end up with this table:
| 1 | 11 | 37 | 59 | 407 | 649 | 2,183 | 16,747 | 24,013 | 184,217 | 619,639 | 988,073 | 6,816,029 | 10,868,803 | 36,558,701 | 402,145,711 |
| -1 | -11 | -37 | -59 | -407 | -649 | -2,183 | -16,747 | -24,013 | -184,217 | -619,639 | -988,073 | -6,816,029 | -10,868,803 | -36,558,701 | -402,145,711 |
Here are some more numbers to try:
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