261987840

素因数分解:

$2^9\times 3^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{137}}^1$

素因数の和:249

約数の個数: 240

約数和(自身を含む): 924972048

約数和(自身を除く): 662984208

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 64, 72, 80, 83, 90, 96, 120, 128, 137, 144, 160, 166, 180, 192, 240, 249, 256, 274, 288, 320, 332, 360, 384, 411, 415, 480, 498, 512, 548, 576, 640, 664, 685, 720, 747, 768, 822, 830, 960, 996, 1096, 1152, 1233, 1245, 1280, 1328, 1370, 1440, 1494, 1536, 1644, 1660, 1920, 1992, 2055, 2192, 2304, 2466, 2490, 2560, 2656, 2740, 2880, 2988, 3288, 3320, 3735, 3840, 3984, 4110, 4384, 4608, 4932, 4980, 5312, 5480, 5760, 5976, 6165, 6576, 6640, 7470, 7680, 7968, 8220, 8768, 9864, 9960, 10624, 10960, 11371, 11520, 11952, 12330, 13152, 13280, 14940, 15936, 16440, 17536, 19728, 19920, 21248, 21920, 22742, 23040, 23904, 24660, 26304, 26560, 29880, 31872, 32880, 34113, 35072, 39456, 39840, 42496, 43840, 45484, 47808, 49320, 52608, 53120, 56855, 59760, 63744, 65760, 68226, 70144, 78912, 79680, 87680, 90968, 95616, 98640, 102339, 105216, 106240, 113710, 119520, 127488, 131520, 136452, 157824, 159360, 170565, 175360, 181936, 191232, 197280, 204678, 210432, 212480, 227420, 239040, 263040, 272904, 315648, 318720, 341130, 350720, 363872, 382464, 394560, 409356, 454840, 478080, 511695, 526080, 545808, 631296, 637440, 682260, 727744, 789120, 818712, 909680, 956160, 1023390, 1052160, 1091616, 1364520, 1455488, 1578240, 1637424, 1819360, 1912320, 2046780, 2183232, 2729040, 2910976, 3156480, 3274848, 3638720, 4093560, 4366464, 5458080, 5821952, 6549696, 7277440, 8187120, 8732928, 10916160, 13099392, 14554880, 16374240, 17465856, 21832320, 26198784, 29109760, 32748480, 43664640, 52397568, 65496960, 87329280, 130993920, 261987840]

約数ペア:

[(1, 261987840), (2, 130993920), (3, 87329280), (4, 65496960), (5, 52397568), (6, 43664640), (8, 32748480), (9, 29109760), (10, 26198784), (12, 21832320), (15, 17465856), (16, 16374240), (18, 14554880), (20, 13099392), (24, 10916160), (30, 8732928), (32, 8187120), (36, 7277440), (40, 6549696), (45, 5821952), (48, 5458080), (60, 4366464), (64, 4093560), (72, 3638720), (80, 3274848), (83, 3156480), (90, 2910976), (96, 2729040), (120, 2183232), (128, 2046780), (137, 1912320), (144, 1819360), (160, 1637424), (166, 1578240), (180, 1455488), (192, 1364520), (240, 1091616), (249, 1052160), (256, 1023390), (274, 956160), (288, 909680), (320, 818712), (332, 789120), (360, 727744), (384, 682260), (411, 637440), (415, 631296), (480, 545808), (498, 526080), (512, 511695), (548, 478080), (576, 454840), (640, 409356), (664, 394560), (685, 382464), (720, 363872), (747, 350720), (768, 341130), (822, 318720), (830, 315648), (960, 272904), (996, 263040), (1096, 239040), (1152, 227420), (1233, 212480), (1245, 210432), (1280, 204678), (1328, 197280), (1370, 191232), (1440, 181936), (1494, 175360), (1536, 170565), (1644, 159360), (1660, 157824), (1920, 136452), (1992, 131520), (2055, 127488), (2192, 119520), (2304, 113710), (2466, 106240), (2490, 105216), (2560, 102339), (2656, 98640), (2740, 95616), (2880, 90968), (2988, 87680), (3288, 79680), (3320, 78912), (3735, 70144), (3840, 68226), (3984, 65760), (4110, 63744), (4384, 59760), (4608, 56855), (4932, 53120), (4980, 52608), (5312, 49320), (5480, 47808), (5760, 45484), (5976, 43840), (6165, 42496), (6576, 39840), (6640, 39456), (7470, 35072), (7680, 34113), (7968, 32880), (8220, 31872), (8768, 29880), (9864, 26560), (9960, 26304), (10624, 24660), (10960, 23904), (11371, 23040), (11520, 22742), (11952, 21920), (12330, 21248), (13152, 19920), (13280, 19728), (14940, 17536), (15936, 16440)]