About the Number

21000000560

21000000559 ← → 21000000561

2進数表記:10011100011101100101001010000110000

漢数字表記:二百十億五百六十

素因数分解:

2 4 × 5 1 × 7 2 × 11 1 × 487013 1

素因数の和:487051
約数の個数: 120
約数和(自身を含む): 61959869136
約数和(自身を除く): 40959868576

約数列:
[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 35, 40, 44, 49, 55, 56, 70, 77, 80, 88, 98, 110, 112, 140, 154, 176, 196, 220, 245, 280, 308, 385, 392, 440, 490, 539, 560, 616, 770, 784, 880, 980, 1078, 1232, 1540, 1960, 2156, 2695, 3080, 3920, 4312, 5390, 6160, 8624, 10780, 21560, 43120, 487013, 974026, 1948052, 2435065, 3409091, 3896104, 4870130, 5357143, 6818182, 7792208, 9740260, 10714286, 13636364, 17045455, 19480520, 21428572, 23863637, 26785715, 27272728, 34090910, 37500001, 38961040, 42857144, 47727274, 53571430, 54545456, 68181820, 75000002, 85714288, 95454548, 107142860, 119318185, 136363640, 150000004, 187500005, 190909096, 214285720, 238636370, 262500007, 272727280, 300000008, 375000010, 381818192, 428571440, 477272740, 525000014, 600000016, 750000020, 954545480, 1050000028, 1312500035, 1500000040, 1909090960, 2100000056, 2625000070, 3000000080, 4200000112, 5250000140, 10500000280, 21000000560]

約数ペア:
[(1, 21000000560), (2, 10500000280), (4, 5250000140), (5, 4200000112), (7, 3000000080), (8, 2625000070), (10, 2100000056), (11, 1909090960), (14, 1500000040), (16, 1312500035), (20, 1050000028), (22, 954545480), (28, 750000020), (35, 600000016), (40, 525000014), (44, 477272740), (49, 428571440), (55, 381818192), (56, 375000010), (70, 300000008), (77, 272727280), (80, 262500007), (88, 238636370), (98, 214285720), (110, 190909096), (112, 187500005), (140, 150000004), (154, 136363640), (176, 119318185), (196, 107142860), (220, 95454548), (245, 85714288), (280, 75000002), (308, 68181820), (385, 54545456), (392, 53571430), (440, 47727274), (490, 42857144), (539, 38961040), (560, 37500001), (616, 34090910), (770, 27272728), (784, 26785715), (880, 23863637), (980, 21428572), (1078, 19480520), (1232, 17045455), (1540, 13636364), (1960, 10714286), (2156, 9740260), (2695, 7792208), (3080, 6818182), (3920, 5357143), (4312, 4870130), (5390, 3896104), (6160, 3409091), (8624, 2435065), (10780, 1948052), (21560, 974026), (43120, 487013)]

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