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Problem 179


Problem 179


Consecutive positive divisors

Find the number of integers 1 < n < 107, for which n and n + 1 have the same number of positive divisors. For example, 14 has the positive divisors 1, 2, 7, 14 while 15 has 1, 3, 5, 15.


连续拥有同样数目正约数的数

求满足1 < n < 107且n和n + 1拥有同样数目正约数的整数n的数目。例如,14有4个正约数1, 2, 7, 14,而15也有4个正约数1, 3, 5, 15。