261686880

素因数分解:

$2^5\times 3^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{1997}}^1$

素因数の和:2038

約数の個数: 288

約数和(自身を含む): 1099635264

約数和(自身を除く): 837948384

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13, 14, 15, 16, 18, 20, 21, 24, 26, 28, 30, 32, 35, 36, 39, 40, 42, 45, 48, 52, 56, 60, 63, 65, 70, 72, 78, 80, 84, 90, 91, 96, 104, 105, 112, 117, 120, 126, 130, 140, 144, 156, 160, 168, 180, 182, 195, 208, 210, 224, 234, 240, 252, 260, 273, 280, 288, 312, 315, 336, 360, 364, 390, 416, 420, 455, 468, 480, 504, 520, 546, 560, 585, 624, 630, 672, 720, 728, 780, 819, 840, 910, 936, 1008, 1040, 1092, 1120, 1170, 1248, 1260, 1365, 1440, 1456, 1560, 1638, 1680, 1820, 1872, 1997, 2016, 2080, 2184, 2340, 2520, 2730, 2912, 3120, 3276, 3360, 3640, 3744, 3994, 4095, 4368, 4680, 5040, 5460, 5991, 6240, 6552, 7280, 7988, 8190, 8736, 9360, 9985, 10080, 10920, 11982, 13104, 13979, 14560, 15976, 16380, 17973, 18720, 19970, 21840, 23964, 25961, 26208, 27958, 29955, 31952, 32760, 35946, 39940, 41937, 43680, 47928, 51922, 55916, 59910, 63904, 65520, 69895, 71892, 77883, 79880, 83874, 89865, 95856, 103844, 111832, 119820, 125811, 129805, 131040, 139790, 143784, 155766, 159760, 167748, 179730, 181727, 191712, 207688, 209685, 223664, 233649, 239640, 251622, 259610, 279580, 287568, 311532, 319520, 335496, 359460, 363454, 389415, 415376, 419370, 447328, 467298, 479280, 503244, 519220, 545181, 559160, 575136, 623064, 629055, 670992, 718920, 726908, 778830, 830752, 838740, 908635, 934596, 958560, 1006488, 1038440, 1090362, 1118320, 1168245, 1246128, 1258110, 1341984, 1437840, 1453816, 1557660, 1635543, 1677480, 1817270, 1869192, 2012976, 2076880, 2180724, 2236640, 2336490, 2492256, 2516220, 2725905, 2875680, 2907632, 3115320, 3271086, 3354960, 3634540, 3738384, 4025952, 4153760, 4361448, 4672980, 5032440, 5451810, 5815264, 6230640, 6542172, 6709920, 7269080, 7476768, 8177715, 8722896, 9345960, 10064880, 10903620, 12461280, 13084344, 14538160, 16355430, 17445792, 18691920, 20129760, 21807240, 26168688, 29076320, 32710860, 37383840, 43614480, 52337376, 65421720, 87228960, 130843440, 261686880]

約数ペア:

[(1, 261686880), (2, 130843440), (3, 87228960), (4, 65421720), (5, 52337376), (6, 43614480), (7, 37383840), (8, 32710860), (9, 29076320), (10, 26168688), (12, 21807240), (13, 20129760), (14, 18691920), (15, 17445792), (16, 16355430), (18, 14538160), (20, 13084344), (21, 12461280), (24, 10903620), (26, 10064880), (28, 9345960), (30, 8722896), (32, 8177715), (35, 7476768), (36, 7269080), (39, 6709920), (40, 6542172), (42, 6230640), (45, 5815264), (48, 5451810), (52, 5032440), (56, 4672980), (60, 4361448), (63, 4153760), (65, 4025952), (70, 3738384), (72, 3634540), (78, 3354960), (80, 3271086), (84, 3115320), (90, 2907632), (91, 2875680), (96, 2725905), (104, 2516220), (105, 2492256), (112, 2336490), (117, 2236640), (120, 2180724), (126, 2076880), (130, 2012976), (140, 1869192), (144, 1817270), (156, 1677480), (160, 1635543), (168, 1557660), (180, 1453816), (182, 1437840), (195, 1341984), (208, 1258110), (210, 1246128), (224, 1168245), (234, 1118320), (240, 1090362), (252, 1038440), (260, 1006488), (273, 958560), (280, 934596), (288, 908635), (312, 838740), (315, 830752), (336, 778830), (360, 726908), (364, 718920), (390, 670992), (416, 629055), (420, 623064), (455, 575136), (468, 559160), (480, 545181), (504, 519220), (520, 503244), (546, 479280), (560, 467298), (585, 447328), (624, 419370), (630, 415376), (672, 389415), (720, 363454), (728, 359460), (780, 335496), (819, 319520), (840, 311532), (910, 287568), (936, 279580), (1008, 259610), (1040, 251622), (1092, 239640), (1120, 233649), (1170, 223664), (1248, 209685), (1260, 207688), (1365, 191712), (1440, 181727), (1456, 179730), (1560, 167748), (1638, 159760), (1680, 155766), (1820, 143784), (1872, 139790), (1997, 131040), (2016, 129805), (2080, 125811), (2184, 119820), (2340, 111832), (2520, 103844), (2730, 95856), (2912, 89865), (3120, 83874), (3276, 79880), (3360, 77883), (3640, 71892), (3744, 69895), (3994, 65520), (4095, 63904), (4368, 59910), (4680, 55916), (5040, 51922), (5460, 47928), (5991, 43680), (6240, 41937), (6552, 39940), (7280, 35946), (7988, 32760), (8190, 31952), (8736, 29955), (9360, 27958), (9985, 26208), (10080, 25961), (10920, 23964), (11982, 21840), (13104, 19970), (13979, 18720), (14560, 17973), (15976, 16380)]