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Zalai Atlas

420,920

23 × 5 × 17 × 619
Abundant Even Composite

420,920 has the prime decomposition 2^3 × 5 × 17 × 619. Its 4 distinct prime factors produce 32 positive divisors.

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Prime Factor Structure

Factorization String 2^3 × 5 × 17 × 619
Distinct Prime Factors 4
Square Status No
Abundance Measure Abundant

Analytical Properties

Total Divisors 32
Divisor Sum (σ) 1,004,400
Proper Divisor Sum 583,480
Digit Sum / Digital Root 17 (Root: 8)
Adjacent Primes #420919 ← → #420929

Radix Representation

Decimal 420920
Binary 1100110110000111000 (19 bits)
Octal 0o1466070
Hexadecimal 0x66C38

Divisor Catalog (5 of 32)

1 2 4 5 8

Collatz Trajectory (81 steps to reach 1)

Iterative sequence n → n/2 (if even) or 3n+1 (if odd):

Showing the first 5 trajectory entries; the stopping-time total above is unchanged.

420,920 210,460 105,230 52,615 157,846

More profiles

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