256627440

素因数分解:

$2^4\times 3^5\times 5^1\times {\mathrm{43}}^1\times {\mathrm{307}}^1$

素因数の和:378

約数の個数: 240

約数和(自身を含む): 917524608

約数和(自身を除く): 660897168

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 36, 40, 43, 45, 48, 54, 60, 72, 80, 81, 86, 90, 108, 120, 129, 135, 144, 162, 172, 180, 215, 216, 240, 243, 258, 270, 307, 324, 344, 360, 387, 405, 430, 432, 486, 516, 540, 614, 645, 648, 688, 720, 774, 810, 860, 921, 972, 1032, 1080, 1161, 1215, 1228, 1290, 1296, 1535, 1548, 1620, 1720, 1842, 1935, 1944, 2064, 2160, 2322, 2430, 2456, 2580, 2763, 3070, 3096, 3240, 3440, 3483, 3684, 3870, 3888, 4605, 4644, 4860, 4912, 5160, 5526, 5805, 6140, 6192, 6480, 6966, 7368, 7740, 8289, 9210, 9288, 9720, 10320, 10449, 11052, 11610, 12280, 13201, 13815, 13932, 14736, 15480, 16578, 17415, 18420, 18576, 19440, 20898, 22104, 23220, 24560, 24867, 26402, 27630, 27864, 30960, 33156, 34830, 36840, 39603, 41445, 41796, 44208, 46440, 49734, 52245, 52804, 55260, 55728, 66005, 66312, 69660, 73680, 74601, 79206, 82890, 83592, 92880, 99468, 104490, 105608, 110520, 118809, 124335, 132010, 132624, 139320, 149202, 158412, 165780, 167184, 198015, 198936, 208980, 211216, 221040, 237618, 248670, 264020, 278640, 298404, 316824, 331560, 356427, 373005, 396030, 397872, 417960, 475236, 497340, 528040, 594045, 596808, 633648, 663120, 712854, 746010, 792060, 835920, 950472, 994680, 1056080, 1069281, 1188090, 1193616, 1425708, 1492020, 1584120, 1782135, 1900944, 1989360, 2138562, 2376180, 2851416, 2984040, 3168240, 3207843, 3564270, 4277124, 4752360, 5346405, 5702832, 5968080, 6415686, 7128540, 8554248, 9504720, 10692810, 12831372, 14257080, 16039215, 17108496, 21385620, 25662744, 28514160, 32078430, 42771240, 51325488, 64156860, 85542480, 128313720, 256627440]

約数ペア:

[(1, 256627440), (2, 128313720), (3, 85542480), (4, 64156860), (5, 51325488), (6, 42771240), (8, 32078430), (9, 28514160), (10, 25662744), (12, 21385620), (15, 17108496), (16, 16039215), (18, 14257080), (20, 12831372), (24, 10692810), (27, 9504720), (30, 8554248), (36, 7128540), (40, 6415686), (43, 5968080), (45, 5702832), (48, 5346405), (54, 4752360), (60, 4277124), (72, 3564270), (80, 3207843), (81, 3168240), (86, 2984040), (90, 2851416), (108, 2376180), (120, 2138562), (129, 1989360), (135, 1900944), (144, 1782135), (162, 1584120), (172, 1492020), (180, 1425708), (215, 1193616), (216, 1188090), (240, 1069281), (243, 1056080), (258, 994680), (270, 950472), (307, 835920), (324, 792060), (344, 746010), (360, 712854), (387, 663120), (405, 633648), (430, 596808), (432, 594045), (486, 528040), (516, 497340), (540, 475236), (614, 417960), (645, 397872), (648, 396030), (688, 373005), (720, 356427), (774, 331560), (810, 316824), (860, 298404), (921, 278640), (972, 264020), (1032, 248670), (1080, 237618), (1161, 221040), (1215, 211216), (1228, 208980), (1290, 198936), (1296, 198015), (1535, 167184), (1548, 165780), (1620, 158412), (1720, 149202), (1842, 139320), (1935, 132624), (1944, 132010), (2064, 124335), (2160, 118809), (2322, 110520), (2430, 105608), (2456, 104490), (2580, 99468), (2763, 92880), (3070, 83592), (3096, 82890), (3240, 79206), (3440, 74601), (3483, 73680), (3684, 69660), (3870, 66312), (3888, 66005), (4605, 55728), (4644, 55260), (4860, 52804), (4912, 52245), (5160, 49734), (5526, 46440), (5805, 44208), (6140, 41796), (6192, 41445), (6480, 39603), (6966, 36840), (7368, 34830), (7740, 33156), (8289, 30960), (9210, 27864), (9288, 27630), (9720, 26402), (10320, 24867), (10449, 24560), (11052, 23220), (11610, 22104), (12280, 20898), (13201, 19440), (13815, 18576), (13932, 18420), (14736, 17415), (15480, 16578)]