256,990

2 × 5 × 31 × 829

Prime Factor Structure

Factorization String 2 × 5 × 31 × 829

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Total Divisors 16

Divisor Sum (σ) 478,080

Proper Divisor Sum 221,090

Digit Sum / Digital Root 31 (Root: 4)

Adjacent Primes #256981 ← → #257003

1 2 5 10 31 62 155 310 829 1,658 4,145 8,290 25,699 51,398 128,495 256,990

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

256,990 128,495 385,486 192,743 578,230 289,115 867,346 433,673 1,301,020 650,510 325,255 975,766 487,883 1,463,650 731,825 2,195,476 1,097,738 548,869 1,646,608 823,304 411,652 205,826 102,913 308,740 154,370 77,185 231,556 115,778 57,889 173,668 86,834 43,417 130,252 65,126 32,563 97,690 48,845 146,536 73,268 36,634 18,317 54,952 27,476 13,738 6,869 20,608 10,304 5,152 2,576 1,288 644 322 161 484 242 121 364 182 91 274

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