20665440

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{113}}^1\times {\mathrm{127}}^1$

素因数の和:261

約数の個数: 144

約数和(自身を含む): 71705088

約数和(自身を除く): 51039648

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, 72, 80, 90, 96, 113, 120, 127, 144, 160, 180, 226, 240, 254, 288, 339, 360, 381, 452, 480, 508, 565, 635, 678, 720, 762, 904, 1016, 1017, 1130, 1143, 1270, 1356, 1440, 1524, 1695, 1808, 1905, 2032, 2034, 2260, 2286, 2540, 2712, 3048, 3390, 3616, 3810, 4064, 4068, 4520, 4572, 5080, 5085, 5424, 5715, 6096, 6780, 7620, 8136, 9040, 9144, 10160, 10170, 10848, 11430, 12192, 13560, 14351, 15240, 16272, 18080, 18288, 20320, 20340, 22860, 27120, 28702, 30480, 32544, 36576, 40680, 43053, 45720, 54240, 57404, 60960, 71755, 81360, 86106, 91440, 114808, 129159, 143510, 162720, 172212, 182880, 215265, 229616, 258318, 287020, 344424, 430530, 459232, 516636, 574040, 645795, 688848, 861060, 1033272, 1148080, 1291590, 1377696, 1722120, 2066544, 2296160, 2583180, 3444240, 4133088, 5166360, 6888480, 10332720, 20665440]

約数ペア:

[(1, 20665440), (2, 10332720), (3, 6888480), (4, 5166360), (5, 4133088), (6, 3444240), (8, 2583180), (9, 2296160), (10, 2066544), (12, 1722120), (15, 1377696), (16, 1291590), (18, 1148080), (20, 1033272), (24, 861060), (30, 688848), (32, 645795), (36, 574040), (40, 516636), (45, 459232), (48, 430530), (60, 344424), (72, 287020), (80, 258318), (90, 229616), (96, 215265), (113, 182880), (120, 172212), (127, 162720), (144, 143510), (160, 129159), (180, 114808), (226, 91440), (240, 86106), (254, 81360), (288, 71755), (339, 60960), (360, 57404), (381, 54240), (452, 45720), (480, 43053), (508, 40680), (565, 36576), (635, 32544), (678, 30480), (720, 28702), (762, 27120), (904, 22860), (1016, 20340), (1017, 20320), (1130, 18288), (1143, 18080), (1270, 16272), (1356, 15240), (1440, 14351), (1524, 13560), (1695, 12192), (1808, 11430), (1905, 10848), (2032, 10170), (2034, 10160), (2260, 9144), (2286, 9040), (2540, 8136), (2712, 7620), (3048, 6780), (3390, 6096), (3616, 5715), (3810, 5424), (4064, 5085), (4068, 5080), (4520, 4572)]