These equal 640: 1 x 640, 2 x 320, 4 x 160, 5 x 128, 8 x 80, 10 x 64, 16 x 40, 20 x 32
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40 and 10
The factors of 640 are: 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640.
If a number has equal factors, it is a perfect square and the equal factors would be square roots.
The highest common factor (HCF) of 256 and 640 is the largest number that divides both 256 and 640 without leaving a remainder. To find the HCF, we need to identify the common factors of both numbers. The factors of 256 are 1, 2, 4, 8, 16, 32, 64, 128, and 256, while the factors of 640 are 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, and 320. The highest common factor of 256 and 640 is 128.
16 and -5