81789840

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{449}}^1$

素因数の和:502

約数の個数: 240

約数和(自身を含む): 313372800

約数和(自身を除く): 231582960

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 16, 18, 20, 22, 23, 24, 30, 33, 36, 40, 44, 45, 46, 48, 55, 60, 66, 69, 72, 80, 88, 90, 92, 99, 110, 115, 120, 132, 138, 144, 165, 176, 180, 184, 198, 207, 220, 230, 240, 253, 264, 276, 330, 345, 360, 368, 396, 414, 440, 449, 460, 495, 506, 528, 552, 660, 690, 720, 759, 792, 828, 880, 898, 920, 990, 1012, 1035, 1104, 1265, 1320, 1347, 1380, 1518, 1584, 1656, 1796, 1840, 1980, 2024, 2070, 2245, 2277, 2530, 2640, 2694, 2760, 3036, 3312, 3592, 3795, 3960, 4041, 4048, 4140, 4490, 4554, 4939, 5060, 5388, 5520, 6072, 6735, 7184, 7590, 7920, 8082, 8280, 8980, 9108, 9878, 10120, 10327, 10776, 11385, 12144, 13470, 14817, 15180, 16164, 16560, 17960, 18216, 19756, 20205, 20240, 20654, 21552, 22770, 24695, 26940, 29634, 30360, 30981, 32328, 35920, 36432, 39512, 40410, 41308, 44451, 45540, 49390, 51635, 53880, 59268, 60720, 61962, 64656, 74085, 79024, 80820, 82616, 88902, 91080, 92943, 98780, 103270, 107760, 113597, 118536, 123924, 148170, 154905, 161640, 165232, 177804, 182160, 185886, 197560, 206540, 222255, 227194, 237072, 247848, 296340, 309810, 323280, 340791, 355608, 371772, 395120, 413080, 444510, 454388, 464715, 495696, 567985, 592680, 619620, 681582, 711216, 743544, 826160, 889020, 908776, 929430, 1022373, 1135970, 1185360, 1239240, 1363164, 1487088, 1703955, 1778040, 1817552, 1858860, 2044746, 2271940, 2478480, 2726328, 3407910, 3556080, 3717720, 4089492, 4543880, 5111865, 5452656, 6815820, 7435440, 8178984, 9087760, 10223730, 13631640, 16357968, 20447460, 27263280, 40894920, 81789840]

約数ペア:

[(1, 81789840), (2, 40894920), (3, 27263280), (4, 20447460), (5, 16357968), (6, 13631640), (8, 10223730), (9, 9087760), (10, 8178984), (11, 7435440), (12, 6815820), (15, 5452656), (16, 5111865), (18, 4543880), (20, 4089492), (22, 3717720), (23, 3556080), (24, 3407910), (30, 2726328), (33, 2478480), (36, 2271940), (40, 2044746), (44, 1858860), (45, 1817552), (46, 1778040), (48, 1703955), (55, 1487088), (60, 1363164), (66, 1239240), (69, 1185360), (72, 1135970), (80, 1022373), (88, 929430), (90, 908776), (92, 889020), (99, 826160), (110, 743544), (115, 711216), (120, 681582), (132, 619620), (138, 592680), (144, 567985), (165, 495696), (176, 464715), (180, 454388), (184, 444510), (198, 413080), (207, 395120), (220, 371772), (230, 355608), (240, 340791), (253, 323280), (264, 309810), (276, 296340), (330, 247848), (345, 237072), (360, 227194), (368, 222255), (396, 206540), (414, 197560), (440, 185886), (449, 182160), (460, 177804), (495, 165232), (506, 161640), (528, 154905), (552, 148170), (660, 123924), (690, 118536), (720, 113597), (759, 107760), (792, 103270), (828, 98780), (880, 92943), (898, 91080), (920, 88902), (990, 82616), (1012, 80820), (1035, 79024), (1104, 74085), (1265, 64656), (1320, 61962), (1347, 60720), (1380, 59268), (1518, 53880), (1584, 51635), (1656, 49390), (1796, 45540), (1840, 44451), (1980, 41308), (2024, 40410), (2070, 39512), (2245, 36432), (2277, 35920), (2530, 32328), (2640, 30981), (2694, 30360), (2760, 29634), (3036, 26940), (3312, 24695), (3592, 22770), (3795, 21552), (3960, 20654), (4041, 20240), (4048, 20205), (4140, 19756), (4490, 18216), (4554, 17960), (4939, 16560), (5060, 16164), (5388, 15180), (5520, 14817), (6072, 13470), (6735, 12144), (7184, 11385), (7590, 10776), (7920, 10327), (8082, 10120), (8280, 9878), (8980, 9108)]