A:
Positive:
1 x 612574137 x 875105943 x 1424591113 x 542101301 x 203513791 x 774431801 x 340134859 x 12607
Negative:
-1 x -61257413-7 x -8751059-43 x -1424591-113 x -542101-301 x -203513-791 x -77443-1801 x -34013-4859 x -12607
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 61,257,413, 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 | 61,257,413 | |
| -1 | -61,257,413 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 61,257,413.
Example:
1 x 61,257,413 = 61,257,413
and
-1 x -61,257,413 = 61,257,413
Notice both answers equal 61,257,413
With that explanation out of the way, let's continue. Next, we take the number 61,257,413 and divide it by 2:
61,257,413 ÷ 2 = 30,628,706.5
If the quotient is a whole number, then 2 and 30,628,706.5 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 | 61,257,413 | |
| -1 | -61,257,413 |
Now, we try dividing 61,257,413 by 3:
61,257,413 ÷ 3 = 20,419,137.6667
If the quotient is a whole number, then 3 and 20,419,137.6667 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 | 61,257,413 | |
| -1 | -61,257,413 |
Let's try dividing by 4:
61,257,413 ÷ 4 = 15,314,353.25
If the quotient is a whole number, then 4 and 15,314,353.25 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 | 61,257,413 | |
| -1 | 61,257,413 |
If you did it right, you will end up with this table:
| 1 | 7 | 43 | 113 | 301 | 791 | 1,801 | 4,859 | 12,607 | 34,013 | 77,443 | 203,513 | 542,101 | 1,424,591 | 8,751,059 | 61,257,413 |
| -1 | -7 | -43 | -113 | -301 | -791 | -1,801 | -4,859 | -12,607 | -34,013 | -77,443 | -203,513 | -542,101 | -1,424,591 | -8,751,059 | -61,257,413 |
Here are some more numbers to try:
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