391,620

2² × 3 × 5 × 61 × 107

Prime Factor Structure

Factorization String 2^2 × 3 × 5 × 61 × 107

Distinct Prime Factors 5

Square Status No

Abundance Measure Abundant

Total Divisors 48

Divisor Sum (σ) 1,124,928

Proper Divisor Sum 733,308

Digit Sum / Digital Root 21 (Root: 3)

Adjacent Primes #391619 ← → #391627

1 2 3 4 5 6 10 12 15 20 30 60 61 107 122 183 214 244 305 321 366 428 535 610 642 732 915 1,070 1,220 1,284 1,605 1,830 2,140 3,210 3,660 6,420 6,527 13,054 19,581 26,108 32,635 39,162 65,270 78,324 97,905 130,540 195,810 391,620

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

391,620 195,810 97,905 293,716 146,858 73,429 220,288 110,144 55,072 27,536 13,768 6,884 3,442 1,721 5,164 2,582 1,291 3,874 1,937 5,812 2,906 1,453 4,360 2,180 1,090 545 1,636 818 409 1,228 614 307 922 461 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

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