20175431920

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{199}}^1\times {\mathrm{919}}^1$

素因数の和:1335

約数の個数: 160

約数和(自身を含む): 54210816000

約数和(自身を除く): 34035384080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 197, 199, 280, 394, 398, 560, 788, 796, 919, 985, 995, 1379, 1393, 1576, 1592, 1838, 1970, 1990, 2758, 2786, 3152, 3184, 3676, 3940, 3980, 4595, 5516, 5572, 6433, 6895, 6965, 7352, 7880, 7960, 9190, 11032, 11144, 12866, 13790, 13930, 14704, 15760, 15920, 18380, 22064, 22288, 25732, 27580, 27860, 32165, 36760, 39203, 51464, 55160, 55720, 64330, 73520, 78406, 102928, 110320, 111440, 128660, 156812, 181043, 182881, 196015, 257320, 274421, 313624, 362086, 365762, 392030, 514640, 548842, 627248, 724172, 731524, 784060, 905215, 914405, 1097684, 1267301, 1280167, 1372105, 1448344, 1463048, 1568120, 1810430, 1828810, 2195368, 2534602, 2560334, 2744210, 2896688, 2926096, 3136240, 3620860, 3657620, 4390736, 5069204, 5120668, 5488420, 6336505, 6400835, 7241720, 7315240, 10138408, 10241336, 10976840, 12673010, 12801670, 14483440, 14630480, 20276816, 20482672, 21953680, 25346020, 25603340, 36027557, 50692040, 51206680, 72055114, 101384080, 102413360, 144110228, 180137785, 252192899, 288220456, 360275570, 504385798, 576440912, 720551140, 1008771596, 1260964495, 1441102280, 2017543192, 2521928990, 2882204560, 4035086384, 5043857980, 10087715960, 20175431920]

約数ペア:

[(1, 20175431920), (2, 10087715960), (4, 5043857980), (5, 4035086384), (7, 2882204560), (8, 2521928990), (10, 2017543192), (14, 1441102280), (16, 1260964495), (20, 1008771596), (28, 720551140), (35, 576440912), (40, 504385798), (56, 360275570), (70, 288220456), (80, 252192899), (112, 180137785), (140, 144110228), (197, 102413360), (199, 101384080), (280, 72055114), (394, 51206680), (398, 50692040), (560, 36027557), (788, 25603340), (796, 25346020), (919, 21953680), (985, 20482672), (995, 20276816), (1379, 14630480), (1393, 14483440), (1576, 12801670), (1592, 12673010), (1838, 10976840), (1970, 10241336), (1990, 10138408), (2758, 7315240), (2786, 7241720), (3152, 6400835), (3184, 6336505), (3676, 5488420), (3940, 5120668), (3980, 5069204), (4595, 4390736), (5516, 3657620), (5572, 3620860), (6433, 3136240), (6895, 2926096), (6965, 2896688), (7352, 2744210), (7880, 2560334), (7960, 2534602), (9190, 2195368), (11032, 1828810), (11144, 1810430), (12866, 1568120), (13790, 1463048), (13930, 1448344), (14704, 1372105), (15760, 1280167), (15920, 1267301), (18380, 1097684), (22064, 914405), (22288, 905215), (25732, 784060), (27580, 731524), (27860, 724172), (32165, 627248), (36760, 548842), (39203, 514640), (51464, 392030), (55160, 365762), (55720, 362086), (64330, 313624), (73520, 274421), (78406, 257320), (102928, 196015), (110320, 182881), (111440, 181043), (128660, 156812)]