A:
Positive:
1 x 7423115455 x 14846230917 x 4366538523 x 3227441585 x 8733077115 x 6454883391 x 18984951955 x 379699
Negative:
-1 x -742311545-5 x -148462309-17 x -43665385-23 x -32274415-85 x -8733077-115 x -6454883-391 x -1898495-1955 x -379699
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 742,311,545, 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 | 742,311,545 | |
| -1 | -742,311,545 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 742,311,545.
Example:
1 x 742,311,545 = 742,311,545
and
-1 x -742,311,545 = 742,311,545
Notice both answers equal 742,311,545
With that explanation out of the way, let's continue. Next, we take the number 742,311,545 and divide it by 2:
742,311,545 ÷ 2 = 371,155,772.5
If the quotient is a whole number, then 2 and 371,155,772.5 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 | 742,311,545 | |
| -1 | -742,311,545 |
Now, we try dividing 742,311,545 by 3:
742,311,545 ÷ 3 = 247,437,181.6667
If the quotient is a whole number, then 3 and 247,437,181.6667 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 | 742,311,545 | |
| -1 | -742,311,545 |
Let's try dividing by 4:
742,311,545 ÷ 4 = 185,577,886.25
If the quotient is a whole number, then 4 and 185,577,886.25 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 | 742,311,545 | |
| -1 | 742,311,545 |
If you did it right, you will end up with this table:
| 1 | 5 | 17 | 23 | 85 | 115 | 391 | 1,955 | 379,699 | 1,898,495 | 6,454,883 | 8,733,077 | 32,274,415 | 43,665,385 | 148,462,309 | 742,311,545 |
| -1 | -5 | -17 | -23 | -85 | -115 | -391 | -1,955 | -379,699 | -1,898,495 | -6,454,883 | -8,733,077 | -32,274,415 | -43,665,385 | -148,462,309 | -742,311,545 |
Here are some more numbers to try:
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