About the Number

120981280

120981279 ← → 120981281

2進数表記:111001101100000011100100000

漢数字表記:一億二千九十八万千二百八十

素因数分解:

2 5 × 5 1 × 7 1 × 109 1 × 991 1

素因数の和:1122
約数の個数: 96
約数和(自身を含む): 329978880
約数和(自身を除く): 208997600

約数列:
[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 109, 112, 140, 160, 218, 224, 280, 436, 545, 560, 763, 872, 991, 1090, 1120, 1526, 1744, 1982, 2180, 3052, 3488, 3815, 3964, 4360, 4955, 6104, 6937, 7630, 7928, 8720, 9910, 12208, 13874, 15260, 15856, 17440, 19820, 24416, 27748, 30520, 31712, 34685, 39640, 55496, 61040, 69370, 79280, 108019, 110992, 122080, 138740, 158560, 216038, 221984, 277480, 432076, 540095, 554960, 756133, 864152, 1080190, 1109920, 1512266, 1728304, 2160380, 3024532, 3456608, 3780665, 4320760, 6049064, 7561330, 8641520, 12098128, 15122660, 17283040, 24196256, 30245320, 60490640, 120981280]

約数ペア:
[(1, 120981280), (2, 60490640), (4, 30245320), (5, 24196256), (7, 17283040), (8, 15122660), (10, 12098128), (14, 8641520), (16, 7561330), (20, 6049064), (28, 4320760), (32, 3780665), (35, 3456608), (40, 3024532), (56, 2160380), (70, 1728304), (80, 1512266), (109, 1109920), (112, 1080190), (140, 864152), (160, 756133), (218, 554960), (224, 540095), (280, 432076), (436, 277480), (545, 221984), (560, 216038), (763, 158560), (872, 138740), (991, 122080), (1090, 110992), (1120, 108019), (1526, 79280), (1744, 69370), (1982, 61040), (2180, 55496), (3052, 39640), (3488, 34685), (3815, 31712), (3964, 30520), (4360, 27748), (4955, 24416), (6104, 19820), (6937, 17440), (7630, 15856), (7928, 15260), (8720, 13874), (9910, 12208)]

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