A:
Positive:
1 x 14780844729 x 509684379 x 1870993149 x 992003433 x 3413592291 x 645174321 x 3420711771 x 12557
Negative:
-1 x -147808447-29 x -5096843-79 x -1870993-149 x -992003-433 x -341359-2291 x -64517-4321 x -34207-11771 x -12557
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 147,808,447, 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 | 147,808,447 | |
| -1 | -147,808,447 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 147,808,447.
Example:
1 x 147,808,447 = 147,808,447
and
-1 x -147,808,447 = 147,808,447
Notice both answers equal 147,808,447
With that explanation out of the way, let's continue. Next, we take the number 147,808,447 and divide it by 2:
147,808,447 ÷ 2 = 73,904,223.5
If the quotient is a whole number, then 2 and 73,904,223.5 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 | 147,808,447 | |
| -1 | -147,808,447 |
Now, we try dividing 147,808,447 by 3:
147,808,447 ÷ 3 = 49,269,482.3333
If the quotient is a whole number, then 3 and 49,269,482.3333 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 | 147,808,447 | |
| -1 | -147,808,447 |
Let's try dividing by 4:
147,808,447 ÷ 4 = 36,952,111.75
If the quotient is a whole number, then 4 and 36,952,111.75 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 | 147,808,447 | |
| -1 | 147,808,447 |
If you did it right, you will end up with this table:
| 1 | 29 | 79 | 149 | 433 | 2,291 | 4,321 | 11,771 | 12,557 | 34,207 | 64,517 | 341,359 | 992,003 | 1,870,993 | 5,096,843 | 147,808,447 |
| -1 | -29 | -79 | -149 | -433 | -2,291 | -4,321 | -11,771 | -12,557 | -34,207 | -64,517 | -341,359 | -992,003 | -1,870,993 | -5,096,843 | -147,808,447 |
Here are some more numbers to try:
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