21509956980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{127}}^2\times {\mathrm{239}}^1$

素因数の和:539

約数の個数: 216

約数和(自身を含む): 68170152960

約数和(自身を除く): 46660195980

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 31, 36, 45, 60, 62, 90, 93, 124, 127, 155, 180, 186, 239, 254, 279, 310, 372, 381, 465, 478, 508, 558, 620, 635, 717, 762, 930, 956, 1116, 1143, 1195, 1270, 1395, 1434, 1524, 1860, 1905, 2151, 2286, 2390, 2540, 2790, 2868, 3585, 3810, 3937, 4302, 4572, 4780, 5580, 5715, 7170, 7409, 7620, 7874, 8604, 10755, 11430, 11811, 14340, 14818, 15748, 16129, 19685, 21510, 22227, 22860, 23622, 29636, 30353, 32258, 35433, 37045, 39370, 43020, 44454, 47244, 48387, 59055, 60706, 64516, 66681, 70866, 74090, 78740, 80645, 88908, 91059, 96774, 111135, 118110, 121412, 133362, 141732, 145161, 148180, 151765, 161290, 177165, 182118, 193548, 222270, 236220, 241935, 266724, 273177, 290322, 303530, 322580, 333405, 354330, 364236, 444540, 455295, 483870, 499999, 546354, 580644, 607060, 666810, 708660, 725805, 910590, 940943, 967740, 999998, 1092708, 1333620, 1365885, 1451610, 1499997, 1821180, 1881886, 1999996, 2499995, 2731770, 2822829, 2903220, 2999994, 3763772, 3854831, 4499991, 4704715, 4999990, 5463540, 5645658, 5999988, 7499985, 7709662, 8468487, 8999982, 9409430, 9999980, 11291316, 11564493, 14114145, 14999970, 15419324, 16936974, 17999964, 18818860, 19274155, 22499955, 23128986, 28228290, 29999940, 33873948, 34693479, 38548310, 42342435, 44999910, 46257972, 56456580, 57822465, 69386958, 77096620, 84684870, 89999820, 115644930, 119499761, 138773916, 169369740, 173467395, 231289860, 238999522, 346934790, 358499283, 477999044, 597498805, 693869580, 716998566, 1075497849, 1194997610, 1433997132, 1792496415, 2150995698, 2389995220, 3584992830, 4301991396, 5377489245, 7169985660, 10754978490, 21509956980]

約数ペア:

[(1, 21509956980), (2, 10754978490), (3, 7169985660), (4, 5377489245), (5, 4301991396), (6, 3584992830), (9, 2389995220), (10, 2150995698), (12, 1792496415), (15, 1433997132), (18, 1194997610), (20, 1075497849), (30, 716998566), (31, 693869580), (36, 597498805), (45, 477999044), (60, 358499283), (62, 346934790), (90, 238999522), (93, 231289860), (124, 173467395), (127, 169369740), (155, 138773916), (180, 119499761), (186, 115644930), (239, 89999820), (254, 84684870), (279, 77096620), (310, 69386958), (372, 57822465), (381, 56456580), (465, 46257972), (478, 44999910), (508, 42342435), (558, 38548310), (620, 34693479), (635, 33873948), (717, 29999940), (762, 28228290), (930, 23128986), (956, 22499955), (1116, 19274155), (1143, 18818860), (1195, 17999964), (1270, 16936974), (1395, 15419324), (1434, 14999970), (1524, 14114145), (1860, 11564493), (1905, 11291316), (2151, 9999980), (2286, 9409430), (2390, 8999982), (2540, 8468487), (2790, 7709662), (2868, 7499985), (3585, 5999988), (3810, 5645658), (3937, 5463540), (4302, 4999990), (4572, 4704715), (4780, 4499991), (5580, 3854831), (5715, 3763772), (7170, 2999994), (7409, 2903220), (7620, 2822829), (7874, 2731770), (8604, 2499995), (10755, 1999996), (11430, 1881886), (11811, 1821180), (14340, 1499997), (14818, 1451610), (15748, 1365885), (16129, 1333620), (19685, 1092708), (21510, 999998), (22227, 967740), (22860, 940943), (23622, 910590), (29636, 725805), (30353, 708660), (32258, 666810), (35433, 607060), (37045, 580644), (39370, 546354), (43020, 499999), (44454, 483870), (47244, 455295), (48387, 444540), (59055, 364236), (60706, 354330), (64516, 333405), (66681, 322580), (70866, 303530), (74090, 290322), (78740, 273177), (80645, 266724), (88908, 241935), (91059, 236220), (96774, 222270), (111135, 193548), (118110, 182118), (121412, 177165), (133362, 161290), (141732, 151765), (145161, 148180)]