A:
Positive:
1 x 1610456055 x 322091217 x 2300651535 x 460130349 x 3286645245 x 657329359 x 4485951795 x 897191831 x 879552513 x 640859155 x 1759112565 x 12817
Negative:
-1 x -161045605-5 x -32209121-7 x -23006515-35 x -4601303-49 x -3286645-245 x -657329-359 x -448595-1795 x -89719-1831 x -87955-2513 x -64085-9155 x -17591-12565 x -12817
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 161,045,605, 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 | 161,045,605 | |
| -1 | -161,045,605 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 161,045,605.
Example:
1 x 161,045,605 = 161,045,605
and
-1 x -161,045,605 = 161,045,605
Notice both answers equal 161,045,605
With that explanation out of the way, let's continue. Next, we take the number 161,045,605 and divide it by 2:
161,045,605 ÷ 2 = 80,522,802.5
If the quotient is a whole number, then 2 and 80,522,802.5 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 | 161,045,605 | |
| -1 | -161,045,605 |
Now, we try dividing 161,045,605 by 3:
161,045,605 ÷ 3 = 53,681,868.3333
If the quotient is a whole number, then 3 and 53,681,868.3333 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 | 161,045,605 | |
| -1 | -161,045,605 |
Let's try dividing by 4:
161,045,605 ÷ 4 = 40,261,401.25
If the quotient is a whole number, then 4 and 40,261,401.25 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 | 161,045,605 | |
| -1 | 161,045,605 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 49 | 245 | 359 | 1,795 | 1,831 | 2,513 | 9,155 | 12,565 | 12,817 | 17,591 | 64,085 | 87,955 | 89,719 | 448,595 | 657,329 | 3,286,645 | 4,601,303 | 23,006,515 | 32,209,121 | 161,045,605 |
| -1 | -5 | -7 | -35 | -49 | -245 | -359 | -1,795 | -1,831 | -2,513 | -9,155 | -12,565 | -12,817 | -17,591 | -64,085 | -87,955 | -89,719 | -448,595 | -657,329 | -3,286,645 | -4,601,303 | -23,006,515 | -32,209,121 | -161,045,605 |
Here are some more numbers to try:
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