2² × 5² × 13

Prime Factor Structure

Factorization String 2^2 × 5^2 × 13

Distinct Prime Factors 3

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 18

Divisor Sum (σ) 3,038

Proper Divisor Sum 1,738

Digit Sum / Digital Root 4 (Root: 4)

Adjacent Primes #1297 ← → #1301

1 2 4 5 10 13 20 25 26 50 52 65 100 130 260 325 650 1,300

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

1,300 650 325 976 488 244 122 61 184 92 46 23 70 35 106 53 160 80 40 20 10 5 16 8 4 2 1

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