2² × 13 × 2689

Prime Factor Structure

Factorization String 2^2 × 13 × 2689

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 12

Divisor Sum (σ) 263,620

Proper Divisor Sum 123,792

Digit Sum / Digital Root 31 (Root: 4)

Adjacent Primes #139813 ← → #139831

1 2 4 13 26 52 2,689 5,378 10,756 34,957 69,914 139,828

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

139,828 69,914 34,957 104,872 52,436 26,218 13,109 39,328 19,664 9,832 4,916 2,458 1,229 3,688 1,844 922 461 1,384 692 346 173 520 260 130 65 196 98 49 148 74 37 112 56 28 14 7 22 11 34 17 52 26 13 40 20 10 5 16 8 4 2 1

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