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Divisors of a Natural Number

Calculates the divisors of a natural number, their amount and the sum of divisors. A divisor of a natural number is a smaller or equal natural number, by which the first one is divisible without remainder. As an example, the number 1024 has 11 divisors: 1, 2, 4, 8, 16, 32, 64, 128, 256, 512 and 1024. A number with exactly two divisors, 1 and itself, is a prime number.

Natural number:



Sum of divisors:

Please enter a natural number. This is a positive integer, 1 or 2 or 3 and so on. For very large numbers (above billion), the calculation might take a while.

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