A:
Positive:
1 x 618127517 x 883039311 x 561934113 x 475482777 x 80276391 x 679261143 x 4322571001 x 61751
Negative:
-1 x -61812751-7 x -8830393-11 x -5619341-13 x -4754827-77 x -802763-91 x -679261-143 x -432257-1001 x -61751
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 61,812,751, 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 | 61,812,751 | |
| -1 | -61,812,751 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 61,812,751.
Example:
1 x 61,812,751 = 61,812,751
and
-1 x -61,812,751 = 61,812,751
Notice both answers equal 61,812,751
With that explanation out of the way, let's continue. Next, we take the number 61,812,751 and divide it by 2:
61,812,751 ÷ 2 = 30,906,375.5
If the quotient is a whole number, then 2 and 30,906,375.5 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 | 61,812,751 | |
| -1 | -61,812,751 |
Now, we try dividing 61,812,751 by 3:
61,812,751 ÷ 3 = 20,604,250.3333
If the quotient is a whole number, then 3 and 20,604,250.3333 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 | 61,812,751 | |
| -1 | -61,812,751 |
Let's try dividing by 4:
61,812,751 ÷ 4 = 15,453,187.75
If the quotient is a whole number, then 4 and 15,453,187.75 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 | 61,812,751 | |
| -1 | 61,812,751 |
If you did it right, you will end up with this table:
| 1 | 7 | 11 | 13 | 77 | 91 | 143 | 1,001 | 61,751 | 432,257 | 679,261 | 802,763 | 4,754,827 | 5,619,341 | 8,830,393 | 61,812,751 |
| -1 | -7 | -11 | -13 | -77 | -91 | -143 | -1,001 | -61,751 | -432,257 | -679,261 | -802,763 | -4,754,827 | -5,619,341 | -8,830,393 | -61,812,751 |
Here are some more numbers to try:
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