1.

Find the total number of factors of 513 + 512 + 511 + 510.1. 1322. 1433. 464. 20

Answer» Correct Answer - Option 1 : 132

Given:

The number is 513 + 512 + 511 + 510 

Concept used:

If the number can be expressed as pa.qb.rc.sd, where p, q, r, and s are prime numbers and a, b, c and d are whole numbers,

Then total number of factors of the number = (a + 1) × (b + 1) × (c + 1) × (d + 1)

Calculation:

513 + 512 + 511 + 510 

⇒ 510 × (53 + 52 + 5 + 1)

⇒ 510 × (125 + 25 + 5 + 1)

⇒ 510 × 156

⇒ 510 × 2 × 2 × 3 × 13

⇒ 510 × 22 × 31 × 131

Total number of factors = (10 + 1) × (2 + 1) × (1 + 1) × (1 + 1)

⇒ Total number of factors = 11 × 3 × 2 × 2

∴ Total number of factors are 132



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