A:
Positive:
1 x 1515534055 x 3031068119 x 797649571 x 213455595 x 1595299355 x 4269111349 x 1123456745 x 22469
Negative:
-1 x -151553405-5 x -30310681-19 x -7976495-71 x -2134555-95 x -1595299-355 x -426911-1349 x -112345-6745 x -22469
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 151,553,405, 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 | 151,553,405 | |
| -1 | -151,553,405 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 151,553,405.
Example:
1 x 151,553,405 = 151,553,405
and
-1 x -151,553,405 = 151,553,405
Notice both answers equal 151,553,405
With that explanation out of the way, let's continue. Next, we take the number 151,553,405 and divide it by 2:
151,553,405 ÷ 2 = 75,776,702.5
If the quotient is a whole number, then 2 and 75,776,702.5 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 | 151,553,405 | |
| -1 | -151,553,405 |
Now, we try dividing 151,553,405 by 3:
151,553,405 ÷ 3 = 50,517,801.6667
If the quotient is a whole number, then 3 and 50,517,801.6667 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 | 151,553,405 | |
| -1 | -151,553,405 |
Let's try dividing by 4:
151,553,405 ÷ 4 = 37,888,351.25
If the quotient is a whole number, then 4 and 37,888,351.25 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 | 151,553,405 | |
| -1 | 151,553,405 |
If you did it right, you will end up with this table:
| 1 | 5 | 19 | 71 | 95 | 355 | 1,349 | 6,745 | 22,469 | 112,345 | 426,911 | 1,595,299 | 2,134,555 | 7,976,495 | 30,310,681 | 151,553,405 |
| -1 | -5 | -19 | -71 | -95 | -355 | -1,349 | -6,745 | -22,469 | -112,345 | -426,911 | -1,595,299 | -2,134,555 | -7,976,495 | -30,310,681 | -151,553,405 |
Here are some more numbers to try:
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