Find the number of factors and sum of factors of 25920 excluding 1 and itself.

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In the answer of Question Number 139 it is written -

By definition, a number, for which the sum of all its factors excluding the number itself is equal to twice the number, is called perfect number.

Should it be as below -

a number, for which the sum of all its factors excluding the number itself is equal to the number, is called perfect number.

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a^{7} b^{4} c^{3} d e f

a, b, c, d, e, f

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Numbers having factors 1 and itself are called ______ numbers.

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