820,477

7 × 19 × 31 × 199

Prime Factor Structure

Factorization String 7 × 19 × 31 × 199

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Total Divisors 16

Divisor Sum (σ) 1,024,000

Proper Divisor Sum 203,523

Digit Sum / Digital Root 28 (Root: 1)

Adjacent Primes #820459 ← → #820481

1 7 19 31 133 199 217 589 1,393 3,781 4,123 6,169 26,467 43,183 117,211 820,477

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

820,477 2,461,432 1,230,716 615,358 307,679 923,038 461,519 1,384,558 692,279 2,076,838 1,038,419 3,115,258 1,557,629 4,672,888 2,336,444 1,168,222 584,111 1,752,334 876,167 2,628,502 1,314,251 3,942,754 1,971,377 5,914,132 2,957,066 1,478,533 4,435,600 2,217,800 1,108,900 554,450 277,225 831,676 415,838 207,919 623,758 311,879 935,638 467,819 1,403,458 701,729 2,105,188 1,052,594 526,297 1,578,892 789,446 394,723 1,184,170 592,085 1,776,256 888,128 444,064 222,032 111,016 55,508 27,754 13,877 41,632 20,816 10,408 5,204

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