About the Number

128821680

128821679 ← → 128821681

2進数表記:111101011011010100110110000

漢数字表記:一億二千八百八十二万千六百八十

素因数分解:

2 4 × 3 2 × 5 1 × 13 1 × 13763 1

素因数の和:13795
約数の個数: 120
約数和(自身を含む): 465938928
約数和(自身を除く): 337117248

約数列:
[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 30, 36, 39, 40, 45, 48, 52, 60, 65, 72, 78, 80, 90, 104, 117, 120, 130, 144, 156, 180, 195, 208, 234, 240, 260, 312, 360, 390, 468, 520, 585, 624, 720, 780, 936, 1040, 1170, 1560, 1872, 2340, 3120, 4680, 9360, 13763, 27526, 41289, 55052, 68815, 82578, 110104, 123867, 137630, 165156, 178919, 206445, 220208, 247734, 275260, 330312, 357838, 412890, 495468, 536757, 550520, 619335, 660624, 715676, 825780, 894595, 990936, 1073514, 1101040, 1238670, 1431352, 1610271, 1651560, 1789190, 1981872, 2147028, 2477340, 2683785, 2862704, 3220542, 3303120, 3578380, 4294056, 4954680, 5367570, 6441084, 7156760, 8051355, 8588112, 9909360, 10735140, 12882168, 14313520, 16102710, 21470280, 25764336, 32205420, 42940560, 64410840, 128821680]

約数ペア:
[(1, 128821680), (2, 64410840), (3, 42940560), (4, 32205420), (5, 25764336), (6, 21470280), (8, 16102710), (9, 14313520), (10, 12882168), (12, 10735140), (13, 9909360), (15, 8588112), (16, 8051355), (18, 7156760), (20, 6441084), (24, 5367570), (26, 4954680), (30, 4294056), (36, 3578380), (39, 3303120), (40, 3220542), (45, 2862704), (48, 2683785), (52, 2477340), (60, 2147028), (65, 1981872), (72, 1789190), (78, 1651560), (80, 1610271), (90, 1431352), (104, 1238670), (117, 1101040), (120, 1073514), (130, 990936), (144, 894595), (156, 825780), (180, 715676), (195, 660624), (208, 619335), (234, 550520), (240, 536757), (260, 495468), (312, 412890), (360, 357838), (390, 330312), (468, 275260), (520, 247734), (585, 220208), (624, 206445), (720, 178919), (780, 165156), (936, 137630), (1040, 123867), (1170, 110104), (1560, 82578), (1872, 68815), (2340, 55052), (3120, 41289), (4680, 27526), (9360, 13763)]

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