257026560

素因数分解:

$2^9\times 3^1\times 5^1\times 7^2\times {\mathrm{683}}^1$

素因数の和:723

約数の個数: 240

約数和(自身を含む): 957233376

約数和(自身を除く): 700206816

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 48, 49, 56, 60, 64, 70, 80, 84, 96, 98, 105, 112, 120, 128, 140, 147, 160, 168, 192, 196, 210, 224, 240, 245, 256, 280, 294, 320, 336, 384, 392, 420, 448, 480, 490, 512, 560, 588, 640, 672, 683, 735, 768, 784, 840, 896, 960, 980, 1120, 1176, 1280, 1344, 1366, 1470, 1536, 1568, 1680, 1792, 1920, 1960, 2049, 2240, 2352, 2560, 2688, 2732, 2940, 3136, 3360, 3415, 3584, 3840, 3920, 4098, 4480, 4704, 4781, 5376, 5464, 5880, 6272, 6720, 6830, 7680, 7840, 8196, 8960, 9408, 9562, 10245, 10752, 10928, 11760, 12544, 13440, 13660, 14343, 15680, 16392, 17920, 18816, 19124, 20490, 21856, 23520, 23905, 25088, 26880, 27320, 28686, 31360, 32784, 33467, 37632, 38248, 40980, 43712, 47040, 47810, 53760, 54640, 57372, 62720, 65568, 66934, 71715, 75264, 76496, 81960, 87424, 94080, 95620, 100401, 109280, 114744, 125440, 131136, 133868, 143430, 152992, 163920, 167335, 174848, 188160, 191240, 200802, 218560, 229488, 262272, 267736, 286860, 305984, 327840, 334670, 349696, 376320, 382480, 401604, 437120, 458976, 502005, 524544, 535472, 573720, 611968, 655680, 669340, 764960, 803208, 874240, 917952, 1004010, 1049088, 1070944, 1147440, 1223936, 1311360, 1338680, 1529920, 1606416, 1748480, 1835904, 2008020, 2141888, 2294880, 2447872, 2622720, 2677360, 3059840, 3212832, 3671808, 4016040, 4283776, 4589760, 5245440, 5354720, 6119680, 6425664, 7343616, 8032080, 8567552, 9179520, 10709440, 12239360, 12851328, 16064160, 17135104, 18359040, 21418880, 25702656, 32128320, 36718080, 42837760, 51405312, 64256640, 85675520, 128513280, 257026560]

約数ペア:

[(1, 257026560), (2, 128513280), (3, 85675520), (4, 64256640), (5, 51405312), (6, 42837760), (7, 36718080), (8, 32128320), (10, 25702656), (12, 21418880), (14, 18359040), (15, 17135104), (16, 16064160), (20, 12851328), (21, 12239360), (24, 10709440), (28, 9179520), (30, 8567552), (32, 8032080), (35, 7343616), (40, 6425664), (42, 6119680), (48, 5354720), (49, 5245440), (56, 4589760), (60, 4283776), (64, 4016040), (70, 3671808), (80, 3212832), (84, 3059840), (96, 2677360), (98, 2622720), (105, 2447872), (112, 2294880), (120, 2141888), (128, 2008020), (140, 1835904), (147, 1748480), (160, 1606416), (168, 1529920), (192, 1338680), (196, 1311360), (210, 1223936), (224, 1147440), (240, 1070944), (245, 1049088), (256, 1004010), (280, 917952), (294, 874240), (320, 803208), (336, 764960), (384, 669340), (392, 655680), (420, 611968), (448, 573720), (480, 535472), (490, 524544), (512, 502005), (560, 458976), (588, 437120), (640, 401604), (672, 382480), (683, 376320), (735, 349696), (768, 334670), (784, 327840), (840, 305984), (896, 286860), (960, 267736), (980, 262272), (1120, 229488), (1176, 218560), (1280, 200802), (1344, 191240), (1366, 188160), (1470, 174848), (1536, 167335), (1568, 163920), (1680, 152992), (1792, 143430), (1920, 133868), (1960, 131136), (2049, 125440), (2240, 114744), (2352, 109280), (2560, 100401), (2688, 95620), (2732, 94080), (2940, 87424), (3136, 81960), (3360, 76496), (3415, 75264), (3584, 71715), (3840, 66934), (3920, 65568), (4098, 62720), (4480, 57372), (4704, 54640), (4781, 53760), (5376, 47810), (5464, 47040), (5880, 43712), (6272, 40980), (6720, 38248), (6830, 37632), (7680, 33467), (7840, 32784), (8196, 31360), (8960, 28686), (9408, 27320), (9562, 26880), (10245, 25088), (10752, 23905), (10928, 23520), (11760, 21856), (12544, 20490), (13440, 19124), (13660, 18816), (14343, 17920), (15680, 16392)]