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How many positive integers not exceeding 54 are relatively prime to 54?
Correct answer(s):
- 18
How many positive integers not exceeding 48 are relatively prime to 48?
Correct answer(s):
- 16
How many positive integers not exceeding 45 are relatively prime to 45?
Correct answer(s):
- 24
How many positive integers not exceeding 40 are relatively prime to 40?
Correct answer(s):
- 16
How many positive integers not exceeding 36 are relatively prime to 36?
Correct answer(s):
- 12
Find the sum of all positive divisors of 300.
Correct answer(s):
- 868
Find the sum of all positive divisors of 240.
Correct answer(s):
- 744
Find the sum of all positive divisors of 180.
Correct answer(s):
- 546
Find the sum of all positive divisors of 120.
Correct answer(s):
- 360
Find the sum of all positive divisors of 96.
Correct answer(s):
- 252
Find the sum of all positive divisors of 72.
Correct answer(s):
- 195
Find the sum of all positive divisors of 48.
Correct answer(s):
- 124
Find the sum of all positive divisors of 36.
Correct answer(s):
- 91
How many positive divisors does 2520 have?
Correct answer(s):
- 48
How many positive divisors does 2016 have?
Correct answer(s):
- 36
How many positive divisors does 1800 have?
Correct answer(s):
- 36
How many positive divisors does 1440 have?
Correct answer(s):
- 36
How many positive divisors does 1260 have?
Correct answer(s):
- 36
How many positive divisors does 1080 have?
Correct answer(s):
- 32
How many positive divisors does 900 have?
Correct answer(s):
- 27