Find the number of factors in 1680

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UP Police SI (दरोगा) Official PYP (Held On: 29 Nov 2021 Shift 1)
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  1. 34
  2. 36
  3. 38
  4. 40

Answer (Detailed Solution Below)

Option 4 : 40
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UP Police SI (दरोगा) Official PYP (Held On: 2 Dec 2021 Shift 1)
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Detailed Solution

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Given:

Number = 1680

Formula Used:

Number of factors = (e1 + 1) × (e2 + 1) × ... × (en + 1), where e1, e2, ..., en are the powers of prime factors of the number.

Calculation:

Step 1: Prime Factorization of 1680

1680 = 24 × 31 × 51 × 71

Step 2: Apply the formula for the number of factors:

Number of factors = (4 + 1) × (1 + 1) × (1 + 1) × (1 + 1)

⇒ Number of factors = 5 × 2 × 2 × 2

⇒ Number of factors = 40

The number of factors of 1680 is 40.

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