A:
Positive:
1 x 6471123113 x 497778717 x 3806543221 x 292811349 x 185419839 x 771294537 x 142635933 x 10907
Negative:
-1 x -64711231-13 x -4977787-17 x -3806543-221 x -292811-349 x -185419-839 x -77129-4537 x -14263-5933 x -10907
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 64,711,231, 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 | 64,711,231 | |
| -1 | -64,711,231 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 64,711,231.
Example:
1 x 64,711,231 = 64,711,231
and
-1 x -64,711,231 = 64,711,231
Notice both answers equal 64,711,231
With that explanation out of the way, let's continue. Next, we take the number 64,711,231 and divide it by 2:
64,711,231 ÷ 2 = 32,355,615.5
If the quotient is a whole number, then 2 and 32,355,615.5 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 | 64,711,231 | |
| -1 | -64,711,231 |
Now, we try dividing 64,711,231 by 3:
64,711,231 ÷ 3 = 21,570,410.3333
If the quotient is a whole number, then 3 and 21,570,410.3333 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 | 64,711,231 | |
| -1 | -64,711,231 |
Let's try dividing by 4:
64,711,231 ÷ 4 = 16,177,807.75
If the quotient is a whole number, then 4 and 16,177,807.75 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 | 64,711,231 | |
| -1 | 64,711,231 |
If you did it right, you will end up with this table:
| 1 | 13 | 17 | 221 | 349 | 839 | 4,537 | 5,933 | 10,907 | 14,263 | 77,129 | 185,419 | 292,811 | 3,806,543 | 4,977,787 | 64,711,231 |
| -1 | -13 | -17 | -221 | -349 | -839 | -4,537 | -5,933 | -10,907 | -14,263 | -77,129 | -185,419 | -292,811 | -3,806,543 | -4,977,787 | -64,711,231 |
Here are some more numbers to try:
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