21287155680

素因数分解:

$2^5\times 3^2\times 5^1\times 7^1\times {\mathrm{991}}^1\times {\mathrm{2131}}^1$

素因数の和:3150

約数の個数: 288

約数和(自身を含む): 83142678528

約数和(自身を除く): 61855522848

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 32, 35, 36, 40, 42, 45, 48, 56, 60, 63, 70, 72, 80, 84, 90, 96, 105, 112, 120, 126, 140, 144, 160, 168, 180, 210, 224, 240, 252, 280, 288, 315, 336, 360, 420, 480, 504, 560, 630, 672, 720, 840, 991, 1008, 1120, 1260, 1440, 1680, 1982, 2016, 2131, 2520, 2973, 3360, 3964, 4262, 4955, 5040, 5946, 6393, 6937, 7928, 8524, 8919, 9910, 10080, 10655, 11892, 12786, 13874, 14865, 14917, 15856, 17048, 17838, 19179, 19820, 20811, 21310, 23784, 25572, 27748, 29730, 29834, 31712, 31965, 34096, 34685, 35676, 38358, 39640, 41622, 42620, 44595, 44751, 47568, 51144, 55496, 59460, 59668, 62433, 63930, 68192, 69370, 71352, 74585, 76716, 79280, 83244, 85240, 89190, 89502, 95136, 95895, 102288, 104055, 110992, 118920, 119336, 124866, 127860, 134253, 138740, 142704, 149170, 153432, 158560, 166488, 170480, 178380, 179004, 191790, 204576, 208110, 221984, 223755, 237840, 238672, 249732, 255720, 268506, 277480, 285408, 298340, 306864, 312165, 332976, 340960, 356760, 358008, 383580, 416220, 447510, 475680, 477344, 499464, 511440, 537012, 554960, 596680, 613728, 624330, 665952, 671265, 713520, 716016, 767160, 832440, 895020, 998928, 1022880, 1074024, 1109920, 1193360, 1248660, 1342530, 1427040, 1432032, 1534320, 1664880, 1790040, 1997856, 2111821, 2148048, 2386720, 2497320, 2685060, 3068640, 3329760, 3580080, 4223642, 4296096, 4994640, 5370120, 6335463, 7160160, 8447284, 9989280, 10559105, 10740240, 12670926, 14782747, 16894568, 19006389, 21118210, 21480480, 25341852, 29565494, 31677315, 33789136, 38012778, 42236420, 44348241, 50683704, 59130988, 63354630, 67578272, 73913735, 76025556, 84472840, 88696482, 95031945, 101367408, 118261976, 126709260, 133044723, 147827470, 152051112, 168945680, 177392964, 190063890, 202734816, 221741205, 236523952, 253418520, 266089446, 295654940, 304102224, 337891360, 354785928, 380127780, 443482410, 473047904, 506837040, 532178892, 591309880, 608204448, 665223615, 709571856, 760255560, 886964820, 1013674080, 1064357784, 1182619760, 1330447230, 1419143712, 1520511120, 1773929640, 2128715568, 2365239520, 2660894460, 3041022240, 3547859280, 4257431136, 5321788920, 7095718560, 10643577840, 21287155680]

約数ペア:

[(1, 21287155680), (2, 10643577840), (3, 7095718560), (4, 5321788920), (5, 4257431136), (6, 3547859280), (7, 3041022240), (8, 2660894460), (9, 2365239520), (10, 2128715568), (12, 1773929640), (14, 1520511120), (15, 1419143712), (16, 1330447230), (18, 1182619760), (20, 1064357784), (21, 1013674080), (24, 886964820), (28, 760255560), (30, 709571856), (32, 665223615), (35, 608204448), (36, 591309880), (40, 532178892), (42, 506837040), (45, 473047904), (48, 443482410), (56, 380127780), (60, 354785928), (63, 337891360), (70, 304102224), (72, 295654940), (80, 266089446), (84, 253418520), (90, 236523952), (96, 221741205), (105, 202734816), (112, 190063890), (120, 177392964), (126, 168945680), (140, 152051112), (144, 147827470), (160, 133044723), (168, 126709260), (180, 118261976), (210, 101367408), (224, 95031945), (240, 88696482), (252, 84472840), (280, 76025556), (288, 73913735), (315, 67578272), (336, 63354630), (360, 59130988), (420, 50683704), (480, 44348241), (504, 42236420), (560, 38012778), (630, 33789136), (672, 31677315), (720, 29565494), (840, 25341852), (991, 21480480), (1008, 21118210), (1120, 19006389), (1260, 16894568), (1440, 14782747), (1680, 12670926), (1982, 10740240), (2016, 10559105), (2131, 9989280), (2520, 8447284), (2973, 7160160), (3360, 6335463), (3964, 5370120), (4262, 4994640), (4955, 4296096), (5040, 4223642), (5946, 3580080), (6393, 3329760), (6937, 3068640), (7928, 2685060), (8524, 2497320), (8919, 2386720), (9910, 2148048), (10080, 2111821), (10655, 1997856), (11892, 1790040), (12786, 1664880), (13874, 1534320), (14865, 1432032), (14917, 1427040), (15856, 1342530), (17048, 1248660), (17838, 1193360), (19179, 1109920), (19820, 1074024), (20811, 1022880), (21310, 998928), (23784, 895020), (25572, 832440), (27748, 767160), (29730, 716016), (29834, 713520), (31712, 671265), (31965, 665952), (34096, 624330), (34685, 613728), (35676, 596680), (38358, 554960), (39640, 537012), (41622, 511440), (42620, 499464), (44595, 477344), (44751, 475680), (47568, 447510), (51144, 416220), (55496, 383580), (59460, 358008), (59668, 356760), (62433, 340960), (63930, 332976), (68192, 312165), (69370, 306864), (71352, 298340), (74585, 285408), (76716, 277480), (79280, 268506), (83244, 255720), (85240, 249732), (89190, 238672), (89502, 237840), (95136, 223755), (95895, 221984), (102288, 208110), (104055, 204576), (110992, 191790), (118920, 179004), (119336, 178380), (124866, 170480), (127860, 166488), (134253, 158560), (138740, 153432), (142704, 149170)]