311808280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{157}}^1\times {\mathrm{173}}^1$

素因数の和:389

約数の個数: 128

約数和(自身を含む): 831358080

約数和(自身を除く): 519549800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 41, 56, 70, 82, 140, 157, 164, 173, 205, 280, 287, 314, 328, 346, 410, 574, 628, 692, 785, 820, 865, 1099, 1148, 1211, 1256, 1384, 1435, 1570, 1640, 1730, 2198, 2296, 2422, 2870, 3140, 3460, 4396, 4844, 5495, 5740, 6055, 6280, 6437, 6920, 7093, 8792, 9688, 10990, 11480, 12110, 12874, 14186, 21980, 24220, 25748, 27161, 28372, 32185, 35465, 43960, 45059, 48440, 49651, 51496, 54322, 56744, 64370, 70930, 90118, 99302, 108644, 128740, 135805, 141860, 180236, 190127, 198604, 217288, 225295, 248255, 257480, 271610, 283720, 360472, 380254, 397208, 450590, 496510, 543220, 760508, 901180, 950635, 993020, 1086440, 1113601, 1521016, 1802360, 1901270, 1986040, 2227202, 3802540, 4454404, 5568005, 7605080, 7795207, 8908808, 11136010, 15590414, 22272020, 31180828, 38976035, 44544040, 62361656, 77952070, 155904140, 311808280]

約数ペア:

[(1, 311808280), (2, 155904140), (4, 77952070), (5, 62361656), (7, 44544040), (8, 38976035), (10, 31180828), (14, 22272020), (20, 15590414), (28, 11136010), (35, 8908808), (40, 7795207), (41, 7605080), (56, 5568005), (70, 4454404), (82, 3802540), (140, 2227202), (157, 1986040), (164, 1901270), (173, 1802360), (205, 1521016), (280, 1113601), (287, 1086440), (314, 993020), (328, 950635), (346, 901180), (410, 760508), (574, 543220), (628, 496510), (692, 450590), (785, 397208), (820, 380254), (865, 360472), (1099, 283720), (1148, 271610), (1211, 257480), (1256, 248255), (1384, 225295), (1435, 217288), (1570, 198604), (1640, 190127), (1730, 180236), (2198, 141860), (2296, 135805), (2422, 128740), (2870, 108644), (3140, 99302), (3460, 90118), (4396, 70930), (4844, 64370), (5495, 56744), (5740, 54322), (6055, 51496), (6280, 49651), (6437, 48440), (6920, 45059), (7093, 43960), (8792, 35465), (9688, 32185), (10990, 28372), (11480, 27161), (12110, 25748), (12874, 24220), (14186, 21980)]