λ
Sigma Notebook

2,801,656

23 × 11 × 13 × 31 × 79
Abundant Even Composite

2,801,656 is even and not a perfect square. Its factorization is 2^3 × 11 × 13 × 31 × 79 and its 64 divisors sum to 6,451,200.

Prime Factor Structure

Factorization String 2^3 × 11 × 13 × 31 × 79
Distinct Prime Factors 5
Square Status No
Abundance Measure Abundant

Analytical Properties

Total Divisors 64
Divisor Sum (σ) 6,451,200
Proper Divisor Sum 3,649,544
Digit Sum / Digital Root 28 (Root: 1)
Adjacent Primes #2801641 ← → #2801681

Radix Representation

Decimal 2801656
Binary 1010101011111111111000 (22 bits)
Octal 0o12537770
Hexadecimal 0x2ABFF8

Divisor Catalog (60 of 64)

1 2 4 8 11 13 22 26 31 44 52 62 79 88 104 124 143 158 248 286 316 341 403 572 632 682 806 869 1,027 1,144 1,364 1,612 1,738 2,054 2,449 2,728 3,224 3,476 4,108 4,433 4,898 6,952 8,216 8,866 9,796 11,297 17,732 19,592 22,594 26,939 31,837 35,464 45,188 53,878 63,674 90,376 107,756 127,348 215,512 254,696

Collatz Trajectory (76 steps to reach 1)

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

2,801,656 1,400,828 700,414 350,207 1,050,622 525,311 1,575,934 787,967 2,363,902 1,181,951 3,545,854 1,772,927 5,318,782 2,659,391 7,978,174 3,989,087 11,967,262 5,983,631 17,950,894 8,975,447 26,926,342 13,463,171 40,389,514 20,194,757 60,584,272 30,292,136 15,146,068 7,573,034 3,786,517 11,359,552 5,679,776 2,839,888 1,419,944 709,972 354,986 177,493 532,480 266,240 133,120 66,560 33,280 16,640 8,320 4,160 2,080 1,040 520 260 130 65 196 98 49 148 74 37 112 56 28 14

More profiles

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