About the Number

128729440

128729439 ← → 128729441

2進数表記:111101011000100000101100000

漢数字表記:一億二千八百七十二万九千四百四十

素因数分解:

2 5 × 5 1 × 7 1 × 17 1 × 6761 1

素因数の和:6800
約数の個数: 96
約数和(自身を含む): 368069184
約数和(自身を除く): 239339744

約数列:
[1, 2, 4, 5, 7, 8, 10, 14, 16, 17, 20, 28, 32, 34, 35, 40, 56, 68, 70, 80, 85, 112, 119, 136, 140, 160, 170, 224, 238, 272, 280, 340, 476, 544, 560, 595, 680, 952, 1120, 1190, 1360, 1904, 2380, 2720, 3808, 4760, 6761, 9520, 13522, 19040, 27044, 33805, 47327, 54088, 67610, 94654, 108176, 114937, 135220, 189308, 216352, 229874, 236635, 270440, 378616, 459748, 473270, 540880, 574685, 757232, 804559, 919496, 946540, 1081760, 1149370, 1514464, 1609118, 1838992, 1893080, 2298740, 3218236, 3677984, 3786160, 4022795, 4597480, 6436472, 7572320, 8045590, 9194960, 12872944, 16091180, 18389920, 25745888, 32182360, 64364720, 128729440]

約数ペア:
[(1, 128729440), (2, 64364720), (4, 32182360), (5, 25745888), (7, 18389920), (8, 16091180), (10, 12872944), (14, 9194960), (16, 8045590), (17, 7572320), (20, 6436472), (28, 4597480), (32, 4022795), (34, 3786160), (35, 3677984), (40, 3218236), (56, 2298740), (68, 1893080), (70, 1838992), (80, 1609118), (85, 1514464), (112, 1149370), (119, 1081760), (136, 946540), (140, 919496), (160, 804559), (170, 757232), (224, 574685), (238, 540880), (272, 473270), (280, 459748), (340, 378616), (476, 270440), (544, 236635), (560, 229874), (595, 216352), (680, 189308), (952, 135220), (1120, 114937), (1190, 108176), (1360, 94654), (1904, 67610), (2380, 54088), (2720, 47327), (3808, 33805), (4760, 27044), (6761, 19040), (9520, 13522)]

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