About the Number

131131728

131131727 ← → 131131729

2進数表記:111110100001110100101010000

漢数字表記:一億三千百十三万千七百二十八

素因数分解:

2 4 × 3 2 × 7 1 × 13 1 × 10007 1

素因数の和:10041
約数の個数: 120
約数和(自身を含む): 451721088
約数和(自身を除く): 320589360

約数列:
[1, 2, 3, 4, 6, 7, 8, 9, 12, 13, 14, 16, 18, 21, 24, 26, 28, 36, 39, 42, 48, 52, 56, 63, 72, 78, 84, 91, 104, 112, 117, 126, 144, 156, 168, 182, 208, 234, 252, 273, 312, 336, 364, 468, 504, 546, 624, 728, 819, 936, 1008, 1092, 1456, 1638, 1872, 2184, 3276, 4368, 6552, 10007, 13104, 20014, 30021, 40028, 60042, 70049, 80056, 90063, 120084, 130091, 140098, 160112, 180126, 210147, 240168, 260182, 280196, 360252, 390273, 420294, 480336, 520364, 560392, 630441, 720504, 780546, 840588, 910637, 1040728, 1120784, 1170819, 1260882, 1441008, 1561092, 1681176, 1821274, 2081456, 2341638, 2521764, 2731911, 3122184, 3362352, 3642548, 4683276, 5043528, 5463822, 6244368, 7285096, 8195733, 9366552, 10087056, 10927644, 14570192, 16391466, 18733104, 21855288, 32782932, 43710576, 65565864, 131131728]

約数ペア:
[(1, 131131728), (2, 65565864), (3, 43710576), (4, 32782932), (6, 21855288), (7, 18733104), (8, 16391466), (9, 14570192), (12, 10927644), (13, 10087056), (14, 9366552), (16, 8195733), (18, 7285096), (21, 6244368), (24, 5463822), (26, 5043528), (28, 4683276), (36, 3642548), (39, 3362352), (42, 3122184), (48, 2731911), (52, 2521764), (56, 2341638), (63, 2081456), (72, 1821274), (78, 1681176), (84, 1561092), (91, 1441008), (104, 1260882), (112, 1170819), (117, 1120784), (126, 1040728), (144, 910637), (156, 840588), (168, 780546), (182, 720504), (208, 630441), (234, 560392), (252, 520364), (273, 480336), (312, 420294), (336, 390273), (364, 360252), (468, 280196), (504, 260182), (546, 240168), (624, 210147), (728, 180126), (819, 160112), (936, 140098), (1008, 130091), (1092, 120084), (1456, 90063), (1638, 80056), (1872, 70049), (2184, 60042), (3276, 40028), (4368, 30021), (6552, 20014), (10007, 13104)]

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