A:
Positive:
1 x 1253462217 x 1790660311 x 1139511113 x 964201777 x 162787391 x 1377431143 x 8765471001 x 125221
Negative:
-1 x -125346221-7 x -17906603-11 x -11395111-13 x -9642017-77 x -1627873-91 x -1377431-143 x -876547-1001 x -125221
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 125,346,221, 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 | 125,346,221 | |
| -1 | -125,346,221 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 125,346,221.
Example:
1 x 125,346,221 = 125,346,221
and
-1 x -125,346,221 = 125,346,221
Notice both answers equal 125,346,221
With that explanation out of the way, let's continue. Next, we take the number 125,346,221 and divide it by 2:
125,346,221 ÷ 2 = 62,673,110.5
If the quotient is a whole number, then 2 and 62,673,110.5 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 | 125,346,221 | |
| -1 | -125,346,221 |
Now, we try dividing 125,346,221 by 3:
125,346,221 ÷ 3 = 41,782,073.6667
If the quotient is a whole number, then 3 and 41,782,073.6667 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 | 125,346,221 | |
| -1 | -125,346,221 |
Let's try dividing by 4:
125,346,221 ÷ 4 = 31,336,555.25
If the quotient is a whole number, then 4 and 31,336,555.25 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 | 125,346,221 | |
| -1 | 125,346,221 |
If you did it right, you will end up with this table:
| 1 | 7 | 11 | 13 | 77 | 91 | 143 | 1,001 | 125,221 | 876,547 | 1,377,431 | 1,627,873 | 9,642,017 | 11,395,111 | 17,906,603 | 125,346,221 |
| -1 | -7 | -11 | -13 | -77 | -91 | -143 | -1,001 | -125,221 | -876,547 | -1,377,431 | -1,627,873 | -9,642,017 | -11,395,111 | -17,906,603 | -125,346,221 |
Here are some more numbers to try:
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