20728161720

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{10559}}^1$

素因数の和:10643

約数の個数: 384

約数和(自身を含む): 83026944000

約数和(自身を除く): 62298782280

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 19, 20, 21, 24, 28, 30, 35, 36, 38, 40, 41, 42, 45, 56, 57, 60, 63, 70, 72, 76, 82, 84, 90, 95, 105, 114, 120, 123, 126, 133, 140, 152, 164, 168, 171, 180, 190, 205, 210, 228, 246, 252, 266, 280, 285, 287, 315, 328, 342, 360, 369, 380, 399, 410, 420, 456, 492, 504, 532, 570, 574, 615, 630, 665, 684, 738, 760, 779, 798, 820, 840, 855, 861, 984, 1064, 1140, 1148, 1197, 1230, 1260, 1330, 1368, 1435, 1476, 1558, 1596, 1640, 1710, 1722, 1845, 1995, 2280, 2296, 2337, 2394, 2460, 2520, 2583, 2660, 2870, 2952, 3116, 3192, 3420, 3444, 3690, 3895, 3990, 4305, 4674, 4788, 4920, 5166, 5320, 5453, 5740, 5985, 6232, 6840, 6888, 7011, 7380, 7790, 7980, 8610, 9348, 9576, 10332, 10559, 10906, 11480, 11685, 11970, 12915, 14022, 14760, 15580, 15960, 16359, 17220, 18696, 20664, 21118, 21812, 23370, 23940, 25830, 27265, 28044, 31160, 31677, 32718, 34440, 35055, 42236, 43624, 46740, 47880, 49077, 51660, 52795, 54530, 56088, 63354, 65436, 70110, 73913, 81795, 84472, 93480, 95031, 98154, 103320, 105590, 109060, 126708, 130872, 140220, 147826, 158385, 163590, 190062, 196308, 200621, 211180, 218120, 221739, 245385, 253416, 280440, 295652, 316770, 327180, 369565, 380124, 392616, 401242, 422360, 432919, 443478, 475155, 490770, 591304, 601863, 633540, 654360, 665217, 739130, 760248, 802484, 865838, 886956, 950310, 981540, 1003105, 1108695, 1203726, 1267080, 1298757, 1330434, 1404347, 1478260, 1604968, 1731676, 1773912, 1805589, 1900620, 1963080, 2006210, 2164595, 2217390, 2407452, 2597514, 2660868, 2808694, 2956520, 3009315, 3030433, 3326085, 3463352, 3611178, 3801240, 3896271, 4012420, 4213041, 4329190, 4434780, 4814904, 5195028, 5321736, 5617388, 6018630, 6060866, 6493785, 6652170, 7021735, 7222356, 7792542, 8024840, 8225461, 8426082, 8658380, 8869560, 9027945, 9091299, 10390056, 11234776, 12037260, 12121732, 12639123, 12987570, 13304340, 14043470, 14444712, 15152165, 15585084, 16450922, 16852164, 17316760, 18055890, 18182598, 19481355, 21065205, 24074520, 24243464, 24676383, 25278246, 25975140, 26608680, 27273897, 28086940, 30304330, 31170168, 32901844, 33704328, 36111780, 36365196, 38962710, 41127305, 42130410, 45456495, 49352766, 50556492, 51950280, 54547794, 56173880, 57578227, 60608660, 63195615, 65803688, 72223560, 72730392, 74029149, 77925420, 82254610, 84260820, 90912990, 98705532, 101112984, 109095588, 115156454, 121217320, 123381915, 126391230, 136369485, 148058298, 155850840, 164509220, 168521640, 172734681, 181825980, 197411064, 218191176, 230312908, 246763830, 252782460, 272738970, 287891135, 296116596, 329018440, 345469362, 363651960, 370145745, 460625816, 493527660, 505564920, 518204043, 545477940, 575782270, 592233192, 690938724, 740291490, 863673405, 987055320, 1036408086, 1090955880, 1151564540, 1381877448, 1480582980, 1727346810, 2072816172, 2303129080, 2591020215, 2961165960, 3454693620, 4145632344, 5182040430, 6909387240, 10364080860, 20728161720]

約数ペア:

[(1, 20728161720), (2, 10364080860), (3, 6909387240), (4, 5182040430), (5, 4145632344), (6, 3454693620), (7, 2961165960), (8, 2591020215), (9, 2303129080), (10, 2072816172), (12, 1727346810), (14, 1480582980), (15, 1381877448), (18, 1151564540), (19, 1090955880), (20, 1036408086), (21, 987055320), (24, 863673405), (28, 740291490), (30, 690938724), (35, 592233192), (36, 575782270), (38, 545477940), (40, 518204043), (41, 505564920), (42, 493527660), (45, 460625816), (56, 370145745), (57, 363651960), (60, 345469362), (63, 329018440), (70, 296116596), (72, 287891135), (76, 272738970), (82, 252782460), (84, 246763830), (90, 230312908), (95, 218191176), (105, 197411064), (114, 181825980), (120, 172734681), (123, 168521640), (126, 164509220), (133, 155850840), (140, 148058298), (152, 136369485), (164, 126391230), (168, 123381915), (171, 121217320), (180, 115156454), (190, 109095588), (205, 101112984), (210, 98705532), (228, 90912990), (246, 84260820), (252, 82254610), (266, 77925420), (280, 74029149), (285, 72730392), (287, 72223560), (315, 65803688), (328, 63195615), (342, 60608660), (360, 57578227), (369, 56173880), (380, 54547794), (399, 51950280), (410, 50556492), (420, 49352766), (456, 45456495), (492, 42130410), (504, 41127305), (532, 38962710), (570, 36365196), (574, 36111780), (615, 33704328), (630, 32901844), (665, 31170168), (684, 30304330), (738, 28086940), (760, 27273897), (779, 26608680), (798, 25975140), (820, 25278246), (840, 24676383), (855, 24243464), (861, 24074520), (984, 21065205), (1064, 19481355), (1140, 18182598), (1148, 18055890), (1197, 17316760), (1230, 16852164), (1260, 16450922), (1330, 15585084), (1368, 15152165), (1435, 14444712), (1476, 14043470), (1558, 13304340), (1596, 12987570), (1640, 12639123), (1710, 12121732), (1722, 12037260), (1845, 11234776), (1995, 10390056), (2280, 9091299), (2296, 9027945), (2337, 8869560), (2394, 8658380), (2460, 8426082), (2520, 8225461), (2583, 8024840), (2660, 7792542), (2870, 7222356), (2952, 7021735), (3116, 6652170), (3192, 6493785), (3420, 6060866), (3444, 6018630), (3690, 5617388), (3895, 5321736), (3990, 5195028), (4305, 4814904), (4674, 4434780), (4788, 4329190), (4920, 4213041), (5166, 4012420), (5320, 3896271), (5453, 3801240), (5740, 3611178), (5985, 3463352), (6232, 3326085), (6840, 3030433), (6888, 3009315), (7011, 2956520), (7380, 2808694), (7790, 2660868), (7980, 2597514), (8610, 2407452), (9348, 2217390), (9576, 2164595), (10332, 2006210), (10559, 1963080), (10906, 1900620), (11480, 1805589), (11685, 1773912), (11970, 1731676), (12915, 1604968), (14022, 1478260), (14760, 1404347), (15580, 1330434), (15960, 1298757), (16359, 1267080), (17220, 1203726), (18696, 1108695), (20664, 1003105), (21118, 981540), (21812, 950310), (23370, 886956), (23940, 865838), (25830, 802484), (27265, 760248), (28044, 739130), (31160, 665217), (31677, 654360), (32718, 633540), (34440, 601863), (35055, 591304), (42236, 490770), (43624, 475155), (46740, 443478), (47880, 432919), (49077, 422360), (51660, 401242), (52795, 392616), (54530, 380124), (56088, 369565), (63354, 327180), (65436, 316770), (70110, 295652), (73913, 280440), (81795, 253416), (84472, 245385), (93480, 221739), (95031, 218120), (98154, 211180), (103320, 200621), (105590, 196308), (109060, 190062), (126708, 163590), (130872, 158385), (140220, 147826)]