1,998,505

5 × 313 × 1277

1,998,505 factors as 5 × 313 × 1277. Its 8 positive divisors give a proper-divisor sum of 409,247, so this integer is deficient. The Collatz stopping time is 228 steps.

Prime Factor Structure

Factorization String 5 × 313 × 1277

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 8

Divisor Sum (σ) 2,407,752

Proper Divisor Sum 409,247

Digit Sum / Digital Root 37 (Root: 1)

Adjacent Primes #1998497 ← → #1998517

Radix Representation

Decimal	1998505
Binary	111100111111010101001 (21 bits)
Octal	0o7477251
Hexadecimal	0x1E7EA9

Divisor Catalog (8)

1 5 313 1,277 1,565 6,385 399,701 1,998,505

Collatz Trajectory (228 steps to reach 1)

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

1,998,505 5,995,516 2,997,758 1,498,879 4,496,638 2,248,319 6,744,958 3,372,479 10,117,438 5,058,719 15,176,158 7,588,079 22,764,238 11,382,119 34,146,358 17,073,179 51,219,538 25,609,769 76,829,308 38,414,654 19,207,327 57,621,982 28,810,991 86,432,974 43,216,487 129,649,462 64,824,731 194,474,194 97,237,097 291,711,292 145,855,646 72,927,823 218,783,470 109,391,735 328,175,206 164,087,603 492,262,810 246,131,405 738,394,216 369,197,108 184,598,554 92,299,277 276,897,832 138,448,916 69,224,458 34,612,229 103,836,688 51,918,344 25,959,172 12,979,586 6,489,793 19,469,380 9,734,690 4,867,345 14,602,036 7,301,018 3,650,509 10,951,528 5,475,764 2,737,882

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