Triangular numbers can be calculated by the sum from 1 to n. For example, the first 10 triangular numbers are:
1, 3, 6, 10, 15, 21, 28, 36, 45, 55, ...
All divisors for each of these numbers are listed below
1: 1 3: 1,3 6: 1,2,3,6 10: 1,2,5,10 15: 1,3,5,15 21: 1,3,7,21 28: 1,2,4,7,14,28 36: 1,2,3,4,6,9,12,18,36 45: 1,3,5,9,15,45 55: 1,5,11,55
Your challenge is to write a function that will return the value of the first triangular number to have over d divisors (d will be passed to your function).
Why are so many solutions lost?
397 Solvers
533 Solvers
Is this triangle right-angled?
1373 Solvers
328 Solvers
208 Solvers