20918531200

素因数分解:

$2^7\times 5^2\times 7^2\times {\mathrm{71}}^1\times {\mathrm{1879}}^1$

素因数の和:1988

約数の個数: 288

約数和(自身を含む): 60991185600

約数和(自身を除く): 40072654400

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 32, 35, 40, 49, 50, 56, 64, 70, 71, 80, 98, 100, 112, 128, 140, 142, 160, 175, 196, 200, 224, 245, 280, 284, 320, 350, 355, 392, 400, 448, 490, 497, 560, 568, 640, 700, 710, 784, 800, 896, 980, 994, 1120, 1136, 1225, 1400, 1420, 1568, 1600, 1775, 1879, 1960, 1988, 2240, 2272, 2450, 2485, 2800, 2840, 3136, 3200, 3479, 3550, 3758, 3920, 3976, 4480, 4544, 4900, 4970, 5600, 5680, 6272, 6958, 7100, 7516, 7840, 7952, 9088, 9395, 9800, 9940, 11200, 11360, 12425, 13153, 13916, 14200, 15032, 15680, 15904, 17395, 18790, 19600, 19880, 22400, 22720, 24850, 26306, 27832, 28400, 30064, 31360, 31808, 34790, 37580, 39200, 39760, 45440, 46975, 49700, 52612, 55664, 56800, 60128, 63616, 65765, 69580, 75160, 78400, 79520, 86975, 92071, 93950, 99400, 105224, 111328, 113600, 120256, 131530, 133409, 139160, 150320, 156800, 159040, 173950, 184142, 187900, 198800, 210448, 222656, 227200, 240512, 263060, 266818, 278320, 300640, 318080, 328825, 347900, 368284, 375800, 397600, 420896, 445312, 460355, 526120, 533636, 556640, 601280, 657650, 667045, 695800, 736568, 751600, 795200, 841792, 920710, 933863, 1052240, 1067272, 1113280, 1202560, 1315300, 1334090, 1391600, 1473136, 1503200, 1590400, 1683584, 1841420, 1867726, 2104480, 2134544, 2226560, 2301775, 2630600, 2668180, 2783200, 2946272, 3006400, 3335225, 3682840, 3735452, 4208960, 4269088, 4603550, 4669315, 5261200, 5336360, 5566400, 5892544, 6012800, 6537041, 6670450, 7365680, 7470904, 8417920, 8538176, 9207100, 9338630, 10522400, 10672720, 11132800, 11785088, 13074082, 13340900, 14731360, 14941808, 17076352, 18414200, 18677260, 21044800, 21345440, 23346575, 26148164, 26681800, 29462720, 29883616, 32685205, 36828400, 37354520, 42089600, 42690880, 46693150, 52296328, 53363600, 58925440, 59767232, 65370410, 73656800, 74709040, 85381760, 93386300, 104592656, 106727200, 119534464, 130740820, 147313600, 149418080, 163426025, 186772600, 209185312, 213454400, 261481640, 294627200, 298836160, 326852050, 373545200, 418370624, 426908800, 522963280, 597672320, 653704100, 747090400, 836741248, 1045926560, 1307408200, 1494180800, 2091853120, 2614816400, 2988361600, 4183706240, 5229632800, 10459265600, 20918531200]

約数ペア:

[(1, 20918531200), (2, 10459265600), (4, 5229632800), (5, 4183706240), (7, 2988361600), (8, 2614816400), (10, 2091853120), (14, 1494180800), (16, 1307408200), (20, 1045926560), (25, 836741248), (28, 747090400), (32, 653704100), (35, 597672320), (40, 522963280), (49, 426908800), (50, 418370624), (56, 373545200), (64, 326852050), (70, 298836160), (71, 294627200), (80, 261481640), (98, 213454400), (100, 209185312), (112, 186772600), (128, 163426025), (140, 149418080), (142, 147313600), (160, 130740820), (175, 119534464), (196, 106727200), (200, 104592656), (224, 93386300), (245, 85381760), (280, 74709040), (284, 73656800), (320, 65370410), (350, 59767232), (355, 58925440), (392, 53363600), (400, 52296328), (448, 46693150), (490, 42690880), (497, 42089600), (560, 37354520), (568, 36828400), (640, 32685205), (700, 29883616), (710, 29462720), (784, 26681800), (800, 26148164), (896, 23346575), (980, 21345440), (994, 21044800), (1120, 18677260), (1136, 18414200), (1225, 17076352), (1400, 14941808), (1420, 14731360), (1568, 13340900), (1600, 13074082), (1775, 11785088), (1879, 11132800), (1960, 10672720), (1988, 10522400), (2240, 9338630), (2272, 9207100), (2450, 8538176), (2485, 8417920), (2800, 7470904), (2840, 7365680), (3136, 6670450), (3200, 6537041), (3479, 6012800), (3550, 5892544), (3758, 5566400), (3920, 5336360), (3976, 5261200), (4480, 4669315), (4544, 4603550), (4900, 4269088), (4970, 4208960), (5600, 3735452), (5680, 3682840), (6272, 3335225), (6958, 3006400), (7100, 2946272), (7516, 2783200), (7840, 2668180), (7952, 2630600), (9088, 2301775), (9395, 2226560), (9800, 2134544), (9940, 2104480), (11200, 1867726), (11360, 1841420), (12425, 1683584), (13153, 1590400), (13916, 1503200), (14200, 1473136), (15032, 1391600), (15680, 1334090), (15904, 1315300), (17395, 1202560), (18790, 1113280), (19600, 1067272), (19880, 1052240), (22400, 933863), (22720, 920710), (24850, 841792), (26306, 795200), (27832, 751600), (28400, 736568), (30064, 695800), (31360, 667045), (31808, 657650), (34790, 601280), (37580, 556640), (39200, 533636), (39760, 526120), (45440, 460355), (46975, 445312), (49700, 420896), (52612, 397600), (55664, 375800), (56800, 368284), (60128, 347900), (63616, 328825), (65765, 318080), (69580, 300640), (75160, 278320), (78400, 266818), (79520, 263060), (86975, 240512), (92071, 227200), (93950, 222656), (99400, 210448), (105224, 198800), (111328, 187900), (113600, 184142), (120256, 173950), (131530, 159040), (133409, 156800), (139160, 150320)]