A:
Positive:
1 x 40233131913 x 3094856341 x 9812959179 x 2247661533 x 7548432327 x 1728974217 x 954077339 x 54821
Negative:
-1 x -402331319-13 x -30948563-41 x -9812959-179 x -2247661-533 x -754843-2327 x -172897-4217 x -95407-7339 x -54821
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 402,331,319, 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 | 402,331,319 | |
| -1 | -402,331,319 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 402,331,319.
Example:
1 x 402,331,319 = 402,331,319
and
-1 x -402,331,319 = 402,331,319
Notice both answers equal 402,331,319
With that explanation out of the way, let's continue. Next, we take the number 402,331,319 and divide it by 2:
402,331,319 ÷ 2 = 201,165,659.5
If the quotient is a whole number, then 2 and 201,165,659.5 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 | 402,331,319 | |
| -1 | -402,331,319 |
Now, we try dividing 402,331,319 by 3:
402,331,319 ÷ 3 = 134,110,439.6667
If the quotient is a whole number, then 3 and 134,110,439.6667 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 | 402,331,319 | |
| -1 | -402,331,319 |
Let's try dividing by 4:
402,331,319 ÷ 4 = 100,582,829.75
If the quotient is a whole number, then 4 and 100,582,829.75 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 | 402,331,319 | |
| -1 | 402,331,319 |
If you did it right, you will end up with this table:
| 1 | 13 | 41 | 179 | 533 | 2,327 | 4,217 | 7,339 | 54,821 | 95,407 | 172,897 | 754,843 | 2,247,661 | 9,812,959 | 30,948,563 | 402,331,319 |
| -1 | -13 | -41 | -179 | -533 | -2,327 | -4,217 | -7,339 | -54,821 | -95,407 | -172,897 | -754,843 | -2,247,661 | -9,812,959 | -30,948,563 | -402,331,319 |
Here are some more numbers to try:
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