A:
Positive:
1 x 1032401237 x 1474858923 x 448870179 x 1306837161 x 641243553 x 1866911817 x 568198117 x 12719
Negative:
-1 x -103240123-7 x -14748589-23 x -4488701-79 x -1306837-161 x -641243-553 x -186691-1817 x -56819-8117 x -12719
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 103,240,123, 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 | 103,240,123 | |
| -1 | -103,240,123 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 103,240,123.
Example:
1 x 103,240,123 = 103,240,123
and
-1 x -103,240,123 = 103,240,123
Notice both answers equal 103,240,123
With that explanation out of the way, let's continue. Next, we take the number 103,240,123 and divide it by 2:
103,240,123 ÷ 2 = 51,620,061.5
If the quotient is a whole number, then 2 and 51,620,061.5 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 | 103,240,123 | |
| -1 | -103,240,123 |
Now, we try dividing 103,240,123 by 3:
103,240,123 ÷ 3 = 34,413,374.3333
If the quotient is a whole number, then 3 and 34,413,374.3333 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 | 103,240,123 | |
| -1 | -103,240,123 |
Let's try dividing by 4:
103,240,123 ÷ 4 = 25,810,030.75
If the quotient is a whole number, then 4 and 25,810,030.75 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 | 103,240,123 | |
| -1 | 103,240,123 |
If you did it right, you will end up with this table:
| 1 | 7 | 23 | 79 | 161 | 553 | 1,817 | 8,117 | 12,719 | 56,819 | 186,691 | 641,243 | 1,306,837 | 4,488,701 | 14,748,589 | 103,240,123 |
| -1 | -7 | -23 | -79 | -161 | -553 | -1,817 | -8,117 | -12,719 | -56,819 | -186,691 | -641,243 | -1,306,837 | -4,488,701 | -14,748,589 | -103,240,123 |
Here are some more numbers to try:
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