A:
Positive:
1 x 6387631913 x 491356337 x 172638741 x 155795979 x 808561481 x 132799533 x 1198431027 x 621971517 x 421071681 x 379992923 x 218533239 x 19721
Negative:
-1 x -63876319-13 x -4913563-37 x -1726387-41 x -1557959-79 x -808561-481 x -132799-533 x -119843-1027 x -62197-1517 x -42107-1681 x -37999-2923 x -21853-3239 x -19721
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 63,876,319, 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 | 63,876,319 | |
| -1 | -63,876,319 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 63,876,319.
Example:
1 x 63,876,319 = 63,876,319
and
-1 x -63,876,319 = 63,876,319
Notice both answers equal 63,876,319
With that explanation out of the way, let's continue. Next, we take the number 63,876,319 and divide it by 2:
63,876,319 ÷ 2 = 31,938,159.5
If the quotient is a whole number, then 2 and 31,938,159.5 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 | 63,876,319 | |
| -1 | -63,876,319 |
Now, we try dividing 63,876,319 by 3:
63,876,319 ÷ 3 = 21,292,106.3333
If the quotient is a whole number, then 3 and 21,292,106.3333 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 | 63,876,319 | |
| -1 | -63,876,319 |
Let's try dividing by 4:
63,876,319 ÷ 4 = 15,969,079.75
If the quotient is a whole number, then 4 and 15,969,079.75 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 | 63,876,319 | |
| -1 | 63,876,319 |
If you did it right, you will end up with this table:
| 1 | 13 | 37 | 41 | 79 | 481 | 533 | 1,027 | 1,517 | 1,681 | 2,923 | 3,239 | 19,721 | 21,853 | 37,999 | 42,107 | 62,197 | 119,843 | 132,799 | 808,561 | 1,557,959 | 1,726,387 | 4,913,563 | 63,876,319 |
| -1 | -13 | -37 | -41 | -79 | -481 | -533 | -1,027 | -1,517 | -1,681 | -2,923 | -3,239 | -19,721 | -21,853 | -37,999 | -42,107 | -62,197 | -119,843 | -132,799 | -808,561 | -1,557,959 | -1,726,387 | -4,913,563 | -63,876,319 |
Here are some more numbers to try:
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