2² × 5 × 13 × 821

Prime Factor Structure

Factorization String 2^2 × 5 × 13 × 821

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 483,336

Proper Divisor Sum 269,876

Digit Sum / Digital Root 16 (Root: 7)

Adjacent Primes #213449 ← → #213461

1 2 4 5 10 13 20 26 52 65 130 260 821 1,642 3,284 4,105 8,210 10,673 16,420 21,346 42,692 53,365 106,730 213,460

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

213,460 106,730 53,365 160,096 80,048 40,024 20,012 10,006 5,003 15,010 7,505 22,516 11,258 5,629 16,888 8,444 4,222 2,111 6,334 3,167 9,502 4,751 14,254 7,127 21,382 10,691 32,074 16,037 48,112 24,056 12,028 6,014 3,007 9,022 4,511 13,534 6,767 20,302 10,151 30,454 15,227 45,682 22,841 68,524 34,262 17,131 51,394 25,697 77,092 38,546 19,273 57,820 28,910 14,455 43,366 21,683 65,050 32,525 97,576 48,788

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