2² × 3⁵ × 13 × 31

Prime Factor Structure

Factorization String 2^2 × 3^5 × 13 × 31

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 72

Divisor Sum (σ) 1,141,504

Proper Divisor Sum 749,788

Digit Sum / Digital Root 27 (Root: 9)

Adjacent Primes #391711 ← → #391717

1 2 3 4 6 9 12 13 18 26 27 31 36 39 52 54 62 78 81 93 108 117 124 156 162 186 234 243 279 324 351 372 403 468 486 558 702 806 837 972 1,053 1,116 1,209 1,404 1,612 1,674 2,106 2,418 2,511 3,159 3,348 3,627 4,212 4,836 5,022 6,318 7,254 7,533 10,044 10,881

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

391,716 195,858 97,929 293,788 146,894 73,447 220,342 110,171 330,514 165,257 495,772 247,886 123,943 371,830 185,915 557,746 278,873 836,620 418,310 209,155 627,466 313,733 941,200 470,600 235,300 117,650 58,825 176,476 88,238 44,119 132,358 66,179 198,538 99,269 297,808 148,904 74,452 37,226 18,613 55,840 27,920 13,960 6,980 3,490 1,745 5,236 2,618 1,309 3,928 1,964 982 491 1,474 737 2,212 1,106 553 1,660 830 415

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