20981427840

素因数分解:

$2^7\times 3^3\times 5^1\times {\mathrm{929}}^1\times {\mathrm{1307}}^1$

素因数の和:2264

約数の個数: 256

約数和(自身を含む): 74446128000

約数和(自身を除く): 53464700160

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 32, 36, 40, 45, 48, 54, 60, 64, 72, 80, 90, 96, 108, 120, 128, 135, 144, 160, 180, 192, 216, 240, 270, 288, 320, 360, 384, 432, 480, 540, 576, 640, 720, 864, 929, 960, 1080, 1152, 1307, 1440, 1728, 1858, 1920, 2160, 2614, 2787, 2880, 3456, 3716, 3921, 4320, 4645, 5228, 5574, 5760, 6535, 7432, 7842, 8361, 8640, 9290, 10456, 11148, 11763, 13070, 13935, 14864, 15684, 16722, 17280, 18580, 19605, 20912, 22296, 23526, 25083, 26140, 27870, 29728, 31368, 33444, 35289, 37160, 39210, 41805, 41824, 44592, 47052, 50166, 52280, 55740, 58815, 59456, 62736, 66888, 70578, 74320, 78420, 83610, 83648, 89184, 94104, 100332, 104560, 111480, 117630, 118912, 125415, 125472, 133776, 141156, 148640, 156840, 167220, 167296, 176445, 178368, 188208, 200664, 209120, 222960, 235260, 250830, 250944, 267552, 282312, 297280, 313680, 334440, 352890, 356736, 376416, 401328, 418240, 445920, 470520, 501660, 501888, 535104, 564624, 594560, 627360, 668880, 705780, 752832, 802656, 836480, 891840, 941040, 1003320, 1070208, 1129248, 1214203, 1254720, 1337760, 1411560, 1505664, 1605312, 1783680, 1882080, 2006640, 2258496, 2428406, 2509440, 2675520, 2823120, 3210624, 3642609, 3764160, 4013280, 4516992, 4856812, 5351040, 5646240, 6071015, 7285218, 7528320, 8026560, 9713624, 10927827, 11292480, 12142030, 14570436, 16053120, 18213045, 19427248, 21855654, 22584960, 24284060, 29140872, 32783481, 36426090, 38854496, 43711308, 48568120, 54639135, 58281744, 65566962, 72852180, 77708992, 87422616, 97136240, 109278270, 116563488, 131133924, 145704360, 155417984, 163917405, 174845232, 194272480, 218556540, 233126976, 262267848, 291408720, 327834810, 349690464, 388544960, 437113080, 466253952, 524535696, 582817440, 655669620, 699380928, 777089920, 874226160, 1049071392, 1165634880, 1311339240, 1398761856, 1748452320, 2098142784, 2331269760, 2622678480, 3496904640, 4196285568, 5245356960, 6993809280, 10490713920, 20981427840]

約数ペア:

[(1, 20981427840), (2, 10490713920), (3, 6993809280), (4, 5245356960), (5, 4196285568), (6, 3496904640), (8, 2622678480), (9, 2331269760), (10, 2098142784), (12, 1748452320), (15, 1398761856), (16, 1311339240), (18, 1165634880), (20, 1049071392), (24, 874226160), (27, 777089920), (30, 699380928), (32, 655669620), (36, 582817440), (40, 524535696), (45, 466253952), (48, 437113080), (54, 388544960), (60, 349690464), (64, 327834810), (72, 291408720), (80, 262267848), (90, 233126976), (96, 218556540), (108, 194272480), (120, 174845232), (128, 163917405), (135, 155417984), (144, 145704360), (160, 131133924), (180, 116563488), (192, 109278270), (216, 97136240), (240, 87422616), (270, 77708992), (288, 72852180), (320, 65566962), (360, 58281744), (384, 54639135), (432, 48568120), (480, 43711308), (540, 38854496), (576, 36426090), (640, 32783481), (720, 29140872), (864, 24284060), (929, 22584960), (960, 21855654), (1080, 19427248), (1152, 18213045), (1307, 16053120), (1440, 14570436), (1728, 12142030), (1858, 11292480), (1920, 10927827), (2160, 9713624), (2614, 8026560), (2787, 7528320), (2880, 7285218), (3456, 6071015), (3716, 5646240), (3921, 5351040), (4320, 4856812), (4645, 4516992), (5228, 4013280), (5574, 3764160), (5760, 3642609), (6535, 3210624), (7432, 2823120), (7842, 2675520), (8361, 2509440), (8640, 2428406), (9290, 2258496), (10456, 2006640), (11148, 1882080), (11763, 1783680), (13070, 1605312), (13935, 1505664), (14864, 1411560), (15684, 1337760), (16722, 1254720), (17280, 1214203), (18580, 1129248), (19605, 1070208), (20912, 1003320), (22296, 941040), (23526, 891840), (25083, 836480), (26140, 802656), (27870, 752832), (29728, 705780), (31368, 668880), (33444, 627360), (35289, 594560), (37160, 564624), (39210, 535104), (41805, 501888), (41824, 501660), (44592, 470520), (47052, 445920), (50166, 418240), (52280, 401328), (55740, 376416), (58815, 356736), (59456, 352890), (62736, 334440), (66888, 313680), (70578, 297280), (74320, 282312), (78420, 267552), (83610, 250944), (83648, 250830), (89184, 235260), (94104, 222960), (100332, 209120), (104560, 200664), (111480, 188208), (117630, 178368), (118912, 176445), (125415, 167296), (125472, 167220), (133776, 156840), (141156, 148640)]