21,390,437

17 × 23 × 227 × 241

Prime Factor Structure

Factorization String 17 × 23 × 227 × 241

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Total Divisors 16

Divisor Sum (σ) 23,836,032

Proper Divisor Sum 2,445,595

Digit Sum / Digital Root 29 (Root: 2)

Adjacent Primes #21390433 ← → #21390449

1 17 23 227 241 391 3,859 4,097 5,221 5,543 54,707 88,757 94,231 930,019 1,258,261 21,390,437

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

21,390,437 64,171,312 32,085,656 16,042,828 8,021,414 4,010,707 12,032,122 6,016,061 18,048,184 9,024,092 4,512,046 2,256,023 6,768,070 3,384,035 10,152,106 5,076,053 15,228,160 7,614,080 3,807,040 1,903,520 951,760 475,880 237,940 118,970 59,485 178,456 89,228 44,614 22,307 66,922 33,461 100,384 50,192 25,096 12,548 6,274 3,137 9,412 4,706 2,353 7,060 3,530 1,765 5,296 2,648 1,324 662 331 994 497 1,492 746 373 1,120 560 280 140 70 35 106

Browse other published profiles and their separate link collections.

No other profiles in this collection.