20207880

素因数分解:

$2^3\times 3^8\times 5^1\times 7^1\times {\mathrm{11}}^1$

素因数の和:53

約数の個数: 288

約数和(自身を含む): 85026240

約数和(自身を除く): 64818360

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 15, 18, 20, 21, 22, 24, 27, 28, 30, 33, 35, 36, 40, 42, 44, 45, 54, 55, 56, 60, 63, 66, 70, 72, 77, 81, 84, 88, 90, 99, 105, 108, 110, 120, 126, 132, 135, 140, 154, 162, 165, 168, 180, 189, 198, 210, 216, 220, 231, 243, 252, 264, 270, 280, 297, 308, 315, 324, 330, 360, 378, 385, 396, 405, 420, 440, 462, 486, 495, 504, 540, 567, 594, 616, 630, 648, 660, 693, 729, 756, 770, 792, 810, 840, 891, 924, 945, 972, 990, 1080, 1134, 1155, 1188, 1215, 1260, 1320, 1386, 1458, 1485, 1512, 1540, 1620, 1701, 1782, 1848, 1890, 1944, 1980, 2079, 2187, 2268, 2310, 2376, 2430, 2520, 2673, 2772, 2835, 2916, 2970, 3080, 3240, 3402, 3465, 3564, 3645, 3780, 3960, 4158, 4374, 4455, 4536, 4620, 4860, 5103, 5346, 5544, 5670, 5832, 5940, 6237, 6561, 6804, 6930, 7128, 7290, 7560, 8019, 8316, 8505, 8748, 8910, 9240, 9720, 10206, 10395, 10692, 10935, 11340, 11880, 12474, 13122, 13365, 13608, 13860, 14580, 15309, 16038, 16632, 17010, 17496, 17820, 18711, 20412, 20790, 21384, 21870, 22680, 24057, 24948, 25515, 26244, 26730, 27720, 29160, 30618, 31185, 32076, 32805, 34020, 35640, 37422, 40095, 40824, 41580, 43740, 45927, 48114, 49896, 51030, 52488, 53460, 56133, 61236, 62370, 64152, 65610, 68040, 72171, 74844, 76545, 80190, 83160, 87480, 91854, 93555, 96228, 102060, 106920, 112266, 120285, 122472, 124740, 131220, 144342, 149688, 153090, 160380, 168399, 183708, 187110, 192456, 204120, 224532, 229635, 240570, 249480, 262440, 280665, 288684, 306180, 320760, 336798, 360855, 367416, 374220, 449064, 459270, 481140, 505197, 561330, 577368, 612360, 673596, 721710, 748440, 841995, 918540, 962280, 1010394, 1122660, 1347192, 1443420, 1683990, 1837080, 2020788, 2245320, 2525985, 2886840, 3367980, 4041576, 5051970, 6735960, 10103940, 20207880]

約数ペア:

[(1, 20207880), (2, 10103940), (3, 6735960), (4, 5051970), (5, 4041576), (6, 3367980), (7, 2886840), (8, 2525985), (9, 2245320), (10, 2020788), (11, 1837080), (12, 1683990), (14, 1443420), (15, 1347192), (18, 1122660), (20, 1010394), (21, 962280), (22, 918540), (24, 841995), (27, 748440), (28, 721710), (30, 673596), (33, 612360), (35, 577368), (36, 561330), (40, 505197), (42, 481140), (44, 459270), (45, 449064), (54, 374220), (55, 367416), (56, 360855), (60, 336798), (63, 320760), (66, 306180), (70, 288684), (72, 280665), (77, 262440), (81, 249480), (84, 240570), (88, 229635), (90, 224532), (99, 204120), (105, 192456), (108, 187110), (110, 183708), (120, 168399), (126, 160380), (132, 153090), (135, 149688), (140, 144342), (154, 131220), (162, 124740), (165, 122472), (168, 120285), (180, 112266), (189, 106920), (198, 102060), (210, 96228), (216, 93555), (220, 91854), (231, 87480), (243, 83160), (252, 80190), (264, 76545), (270, 74844), (280, 72171), (297, 68040), (308, 65610), (315, 64152), (324, 62370), (330, 61236), (360, 56133), (378, 53460), (385, 52488), (396, 51030), (405, 49896), (420, 48114), (440, 45927), (462, 43740), (486, 41580), (495, 40824), (504, 40095), (540, 37422), (567, 35640), (594, 34020), (616, 32805), (630, 32076), (648, 31185), (660, 30618), (693, 29160), (729, 27720), (756, 26730), (770, 26244), (792, 25515), (810, 24948), (840, 24057), (891, 22680), (924, 21870), (945, 21384), (972, 20790), (990, 20412), (1080, 18711), (1134, 17820), (1155, 17496), (1188, 17010), (1215, 16632), (1260, 16038), (1320, 15309), (1386, 14580), (1458, 13860), (1485, 13608), (1512, 13365), (1540, 13122), (1620, 12474), (1701, 11880), (1782, 11340), (1848, 10935), (1890, 10692), (1944, 10395), (1980, 10206), (2079, 9720), (2187, 9240), (2268, 8910), (2310, 8748), (2376, 8505), (2430, 8316), (2520, 8019), (2673, 7560), (2772, 7290), (2835, 7128), (2916, 6930), (2970, 6804), (3080, 6561), (3240, 6237), (3402, 5940), (3465, 5832), (3564, 5670), (3645, 5544), (3780, 5346), (3960, 5103), (4158, 4860), (4374, 4620), (4455, 4536)]