No, not every number has an even number of factors. Most numbers do, but perfect square numbers have an odd number of factors because one factor (like 6 in 36) is repeated and does not pair with a different number. Class ...
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4104 = 2³ + 16³ = 9³ + 15³ 13832 = 2³ + 24³ = 18³ + 20³ These are called taxicab numbers, which are expressible as the sum of two positive cubes in two distinct ways. Class 8 Mathematics Chapter ...
No, 156 is not a perfect square. Its prime factorisation is 2 × 2 × 3 × 13. The factors cannot be paired equally. Since 13 is unpaired, 156 cannot be written as a product of equal numbers. So, not ...