639511040

素因数分解:

$2^9\times 5^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{281}}^1$

素因数の和:438

約数の個数: 160

約数和(自身を含む): 1772457984

約数和(自身を除く): 1132946944

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 127, 128, 140, 160, 224, 254, 256, 280, 281, 320, 448, 508, 512, 560, 562, 635, 640, 889, 896, 1016, 1120, 1124, 1270, 1280, 1405, 1778, 1792, 1967, 2032, 2240, 2248, 2540, 2560, 2810, 3556, 3584, 3934, 4064, 4445, 4480, 4496, 5080, 5620, 7112, 7868, 8128, 8890, 8960, 8992, 9835, 10160, 11240, 14224, 15736, 16256, 17780, 17920, 17984, 19670, 20320, 22480, 28448, 31472, 32512, 35560, 35687, 35968, 39340, 40640, 44960, 56896, 62944, 65024, 71120, 71374, 71936, 78680, 81280, 89920, 113792, 125888, 142240, 142748, 143872, 157360, 162560, 178435, 179840, 227584, 249809, 251776, 284480, 285496, 314720, 325120, 356870, 359680, 455168, 499618, 503552, 568960, 570992, 629440, 713740, 719360, 999236, 1007104, 1137920, 1141984, 1249045, 1258880, 1427480, 1998472, 2275840, 2283968, 2498090, 2517760, 2854960, 3996944, 4567936, 4996180, 5035520, 5709920, 7993888, 9135872, 9992360, 11419840, 15987776, 18271744, 19984720, 22839680, 31975552, 39969440, 45679360, 63951104, 79938880, 91358720, 127902208, 159877760, 319755520, 639511040]

約数ペア:

[(1, 639511040), (2, 319755520), (4, 159877760), (5, 127902208), (7, 91358720), (8, 79938880), (10, 63951104), (14, 45679360), (16, 39969440), (20, 31975552), (28, 22839680), (32, 19984720), (35, 18271744), (40, 15987776), (56, 11419840), (64, 9992360), (70, 9135872), (80, 7993888), (112, 5709920), (127, 5035520), (128, 4996180), (140, 4567936), (160, 3996944), (224, 2854960), (254, 2517760), (256, 2498090), (280, 2283968), (281, 2275840), (320, 1998472), (448, 1427480), (508, 1258880), (512, 1249045), (560, 1141984), (562, 1137920), (635, 1007104), (640, 999236), (889, 719360), (896, 713740), (1016, 629440), (1120, 570992), (1124, 568960), (1270, 503552), (1280, 499618), (1405, 455168), (1778, 359680), (1792, 356870), (1967, 325120), (2032, 314720), (2240, 285496), (2248, 284480), (2540, 251776), (2560, 249809), (2810, 227584), (3556, 179840), (3584, 178435), (3934, 162560), (4064, 157360), (4445, 143872), (4480, 142748), (4496, 142240), (5080, 125888), (5620, 113792), (7112, 89920), (7868, 81280), (8128, 78680), (8890, 71936), (8960, 71374), (8992, 71120), (9835, 65024), (10160, 62944), (11240, 56896), (14224, 44960), (15736, 40640), (16256, 39340), (17780, 35968), (17920, 35687), (17984, 35560), (19670, 32512), (20320, 31472), (22480, 28448)]