257405760

素因数分解:

$2^6\times 3^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{643}}^1$

素因数の和:805

約数の個数: 168

約数和(自身を含む): 893124960

約数和(自身を除く): 635719200

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 64, 72, 80, 90, 96, 120, 139, 144, 160, 180, 192, 240, 278, 288, 320, 360, 417, 480, 556, 576, 643, 695, 720, 834, 960, 1112, 1251, 1286, 1390, 1440, 1668, 1929, 2085, 2224, 2502, 2572, 2780, 2880, 3215, 3336, 3858, 4170, 4448, 5004, 5144, 5560, 5787, 6255, 6430, 6672, 7716, 8340, 8896, 9645, 10008, 10288, 11120, 11574, 12510, 12860, 13344, 15432, 16680, 19290, 20016, 20576, 22240, 23148, 25020, 25720, 26688, 28935, 30864, 33360, 38580, 40032, 41152, 44480, 46296, 50040, 51440, 57870, 61728, 66720, 77160, 80064, 89377, 92592, 100080, 102880, 115740, 123456, 133440, 154320, 178754, 185184, 200160, 205760, 231480, 268131, 308640, 357508, 370368, 400320, 446885, 462960, 536262, 617280, 715016, 804393, 893770, 925920, 1072524, 1340655, 1430032, 1608786, 1787540, 1851840, 2145048, 2681310, 2860064, 3217572, 3575080, 4021965, 4290096, 5362620, 5720128, 6435144, 7150160, 8043930, 8580192, 10725240, 12870288, 14300320, 16087860, 17160384, 21450480, 25740576, 28600640, 32175720, 42900960, 51481152, 64351440, 85801920, 128702880, 257405760]

約数ペア:

[(1, 257405760), (2, 128702880), (3, 85801920), (4, 64351440), (5, 51481152), (6, 42900960), (8, 32175720), (9, 28600640), (10, 25740576), (12, 21450480), (15, 17160384), (16, 16087860), (18, 14300320), (20, 12870288), (24, 10725240), (30, 8580192), (32, 8043930), (36, 7150160), (40, 6435144), (45, 5720128), (48, 5362620), (60, 4290096), (64, 4021965), (72, 3575080), (80, 3217572), (90, 2860064), (96, 2681310), (120, 2145048), (139, 1851840), (144, 1787540), (160, 1608786), (180, 1430032), (192, 1340655), (240, 1072524), (278, 925920), (288, 893770), (320, 804393), (360, 715016), (417, 617280), (480, 536262), (556, 462960), (576, 446885), (643, 400320), (695, 370368), (720, 357508), (834, 308640), (960, 268131), (1112, 231480), (1251, 205760), (1286, 200160), (1390, 185184), (1440, 178754), (1668, 154320), (1929, 133440), (2085, 123456), (2224, 115740), (2502, 102880), (2572, 100080), (2780, 92592), (2880, 89377), (3215, 80064), (3336, 77160), (3858, 66720), (4170, 61728), (4448, 57870), (5004, 51440), (5144, 50040), (5560, 46296), (5787, 44480), (6255, 41152), (6430, 40032), (6672, 38580), (7716, 33360), (8340, 30864), (8896, 28935), (9645, 26688), (10008, 25720), (10288, 25020), (11120, 23148), (11574, 22240), (12510, 20576), (12860, 20016), (13344, 19290), (15432, 16680)]