About the Number

81006840

81006839 ← → 81006841

2進数表記:100110101000001000011111000

漢数字表記:八千百万六千八百四十

素因数分解:

2 3 × 3 2 × 5 1 × 43 1 × 5233 1

素因数の和:5293
約数の個数: 96
約数和(自身を含む): 269446320
約数和(自身を除く): 188439480

約数列:
[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 43, 45, 60, 72, 86, 90, 120, 129, 172, 180, 215, 258, 344, 360, 387, 430, 516, 645, 774, 860, 1032, 1290, 1548, 1720, 1935, 2580, 3096, 3870, 5160, 5233, 7740, 10466, 15480, 15699, 20932, 26165, 31398, 41864, 47097, 52330, 62796, 78495, 94194, 104660, 125592, 156990, 188388, 209320, 225019, 235485, 313980, 376776, 450038, 470970, 627960, 675057, 900076, 941940, 1125095, 1350114, 1800152, 1883880, 2025171, 2250190, 2700228, 3375285, 4050342, 4500380, 5400456, 6750570, 8100684, 9000760, 10125855, 13501140, 16201368, 20251710, 27002280, 40503420, 81006840]

約数ペア:
[(1, 81006840), (2, 40503420), (3, 27002280), (4, 20251710), (5, 16201368), (6, 13501140), (8, 10125855), (9, 9000760), (10, 8100684), (12, 6750570), (15, 5400456), (18, 4500380), (20, 4050342), (24, 3375285), (30, 2700228), (36, 2250190), (40, 2025171), (43, 1883880), (45, 1800152), (60, 1350114), (72, 1125095), (86, 941940), (90, 900076), (120, 675057), (129, 627960), (172, 470970), (180, 450038), (215, 376776), (258, 313980), (344, 235485), (360, 225019), (387, 209320), (430, 188388), (516, 156990), (645, 125592), (774, 104660), (860, 94194), (1032, 78495), (1290, 62796), (1548, 52330), (1720, 47097), (1935, 41864), (2580, 31398), (3096, 26165), (3870, 20932), (5160, 15699), (5233, 15480), (7740, 10466)]

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