A:
Positive:
1 x 6147153111 x 5588321109 x 563959167 x 368093307 x 2002331199 x 512691837 x 334633377 x 18203
Negative:
-1 x -61471531-11 x -5588321-109 x -563959-167 x -368093-307 x -200233-1199 x -51269-1837 x -33463-3377 x -18203
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 61,471,531, 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 | 61,471,531 | |
| -1 | -61,471,531 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 61,471,531.
Example:
1 x 61,471,531 = 61,471,531
and
-1 x -61,471,531 = 61,471,531
Notice both answers equal 61,471,531
With that explanation out of the way, let's continue. Next, we take the number 61,471,531 and divide it by 2:
61,471,531 ÷ 2 = 30,735,765.5
If the quotient is a whole number, then 2 and 30,735,765.5 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 | 61,471,531 | |
| -1 | -61,471,531 |
Now, we try dividing 61,471,531 by 3:
61,471,531 ÷ 3 = 20,490,510.3333
If the quotient is a whole number, then 3 and 20,490,510.3333 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 | 61,471,531 | |
| -1 | -61,471,531 |
Let's try dividing by 4:
61,471,531 ÷ 4 = 15,367,882.75
If the quotient is a whole number, then 4 and 15,367,882.75 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 | 61,471,531 | |
| -1 | 61,471,531 |
If you did it right, you will end up with this table:
| 1 | 11 | 109 | 167 | 307 | 1,199 | 1,837 | 3,377 | 18,203 | 33,463 | 51,269 | 200,233 | 368,093 | 563,959 | 5,588,321 | 61,471,531 |
| -1 | -11 | -109 | -167 | -307 | -1,199 | -1,837 | -3,377 | -18,203 | -33,463 | -51,269 | -200,233 | -368,093 | -563,959 | -5,588,321 | -61,471,531 |
Here are some more numbers to try:
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