421607680

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^2\times {\mathrm{1949}}^1$

素因数の和:1996

約数の個数: 108

約数和(自身を含む): 1094102100

約数和(自身を除く): 672494420

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 169, 208, 256, 260, 320, 338, 416, 520, 640, 676, 832, 845, 1040, 1280, 1352, 1664, 1690, 1949, 2080, 2704, 3328, 3380, 3898, 4160, 5408, 6760, 7796, 8320, 9745, 10816, 13520, 15592, 16640, 19490, 21632, 25337, 27040, 31184, 38980, 43264, 50674, 54080, 62368, 77960, 101348, 108160, 124736, 126685, 155920, 202696, 216320, 249472, 253370, 311840, 329381, 405392, 498944, 506740, 623680, 658762, 810784, 1013480, 1247360, 1317524, 1621568, 1646905, 2026960, 2494720, 2635048, 3243136, 3293810, 4053920, 5270096, 6486272, 6587620, 8107840, 10540192, 13175240, 16215680, 21080384, 26350480, 32431360, 42160768, 52700960, 84321536, 105401920, 210803840, 421607680]

約数ペア:

[(1, 421607680), (2, 210803840), (4, 105401920), (5, 84321536), (8, 52700960), (10, 42160768), (13, 32431360), (16, 26350480), (20, 21080384), (26, 16215680), (32, 13175240), (40, 10540192), (52, 8107840), (64, 6587620), (65, 6486272), (80, 5270096), (104, 4053920), (128, 3293810), (130, 3243136), (160, 2635048), (169, 2494720), (208, 2026960), (256, 1646905), (260, 1621568), (320, 1317524), (338, 1247360), (416, 1013480), (520, 810784), (640, 658762), (676, 623680), (832, 506740), (845, 498944), (1040, 405392), (1280, 329381), (1352, 311840), (1664, 253370), (1690, 249472), (1949, 216320), (2080, 202696), (2704, 155920), (3328, 126685), (3380, 124736), (3898, 108160), (4160, 101348), (5408, 77960), (6760, 62368), (7796, 54080), (8320, 50674), (9745, 43264), (10816, 38980), (13520, 31184), (15592, 27040), (16640, 25337), (19490, 21632)]