2² × 3² × 31 × 139

Prime Factor Structure

Factorization String 2^2 × 3^2 × 31 × 139

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 36

Divisor Sum (σ) 407,680

Proper Divisor Sum 252,556

Digit Sum / Digital Root 18 (Root: 9)

Adjacent Primes #155119 ← → #155137

1 2 3 4 6 9 12 18 31 36 62 93 124 139 186 278 279 372 417 556 558 834 1,116 1,251 1,668 2,502 4,309 5,004 8,618 12,927 17,236 25,854 38,781 51,708 77,562 155,124

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

155,124 77,562 38,781 116,344 58,172 29,086 14,543 43,630 21,815 65,446 32,723 98,170 49,085 147,256 73,628 36,814 18,407 55,222 27,611 82,834 41,417 124,252 62,126 31,063 93,190 46,595 139,786 69,893 209,680 104,840 52,420 26,210 13,105 39,316 19,658 9,829 29,488 14,744 7,372 3,686 1,843 5,530 2,765 8,296 4,148 2,074 1,037 3,112 1,556 778 389 1,168 584 292 146 73 220 110 55 166

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