820001280

素因数分解:

$2^9\times 3^1\times 5^1\times 7^2\times {\mathrm{2179}}^1$

素因数の和:2219

約数の個数: 240

約数和(自身を含む): 3050831520

約数和(自身を除く): 2230830240

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, 735, 768, 784, 840, 896, 960, 980, 1120, 1176, 1280, 1344, 1470, 1536, 1568, 1680, 1792, 1920, 1960, 2179, 2240, 2352, 2560, 2688, 2940, 3136, 3360, 3584, 3840, 3920, 4358, 4480, 4704, 5376, 5880, 6272, 6537, 6720, 7680, 7840, 8716, 8960, 9408, 10752, 10895, 11760, 12544, 13074, 13440, 15253, 15680, 17432, 17920, 18816, 21790, 23520, 25088, 26148, 26880, 30506, 31360, 32685, 34864, 37632, 43580, 45759, 47040, 52296, 53760, 61012, 62720, 65370, 69728, 75264, 76265, 87160, 91518, 94080, 104592, 106771, 122024, 125440, 130740, 139456, 152530, 174320, 183036, 188160, 209184, 213542, 228795, 244048, 261480, 278912, 305060, 320313, 348640, 366072, 376320, 418368, 427084, 457590, 488096, 522960, 533855, 557824, 610120, 640626, 697280, 732144, 836736, 854168, 915180, 976192, 1045920, 1067710, 1115648, 1220240, 1281252, 1394560, 1464288, 1601565, 1673472, 1708336, 1830360, 1952384, 2091840, 2135420, 2440480, 2562504, 2789120, 2928576, 3203130, 3346944, 3416672, 3660720, 3904768, 4183680, 4270840, 4880960, 5125008, 5578240, 5857152, 6406260, 6833344, 7321440, 7809536, 8367360, 8541680, 9761920, 10250016, 11714304, 12812520, 13666688, 14642880, 16734720, 17083360, 19523840, 20500032, 23428608, 25625040, 27333376, 29285760, 34166720, 39047680, 41000064, 51250080, 54666752, 58571520, 68333440, 82000128, 102500160, 117143040, 136666880, 164000256, 205000320, 273333760, 410000640, 820001280]

約数ペア:

[(1, 820001280), (2, 410000640), (3, 273333760), (4, 205000320), (5, 164000256), (6, 136666880), (7, 117143040), (8, 102500160), (10, 82000128), (12, 68333440), (14, 58571520), (15, 54666752), (16, 51250080), (20, 41000064), (21, 39047680), (24, 34166720), (28, 29285760), (30, 27333376), (32, 25625040), (35, 23428608), (40, 20500032), (42, 19523840), (48, 17083360), (49, 16734720), (56, 14642880), (60, 13666688), (64, 12812520), (70, 11714304), (80, 10250016), (84, 9761920), (96, 8541680), (98, 8367360), (105, 7809536), (112, 7321440), (120, 6833344), (128, 6406260), (140, 5857152), (147, 5578240), (160, 5125008), (168, 4880960), (192, 4270840), (196, 4183680), (210, 3904768), (224, 3660720), (240, 3416672), (245, 3346944), (256, 3203130), (280, 2928576), (294, 2789120), (320, 2562504), (336, 2440480), (384, 2135420), (392, 2091840), (420, 1952384), (448, 1830360), (480, 1708336), (490, 1673472), (512, 1601565), (560, 1464288), (588, 1394560), (640, 1281252), (672, 1220240), (735, 1115648), (768, 1067710), (784, 1045920), (840, 976192), (896, 915180), (960, 854168), (980, 836736), (1120, 732144), (1176, 697280), (1280, 640626), (1344, 610120), (1470, 557824), (1536, 533855), (1568, 522960), (1680, 488096), (1792, 457590), (1920, 427084), (1960, 418368), (2179, 376320), (2240, 366072), (2352, 348640), (2560, 320313), (2688, 305060), (2940, 278912), (3136, 261480), (3360, 244048), (3584, 228795), (3840, 213542), (3920, 209184), (4358, 188160), (4480, 183036), (4704, 174320), (5376, 152530), (5880, 139456), (6272, 130740), (6537, 125440), (6720, 122024), (7680, 106771), (7840, 104592), (8716, 94080), (8960, 91518), (9408, 87160), (10752, 76265), (10895, 75264), (11760, 69728), (12544, 65370), (13074, 62720), (13440, 61012), (15253, 53760), (15680, 52296), (17432, 47040), (17920, 45759), (18816, 43580), (21790, 37632), (23520, 34864), (25088, 32685), (26148, 31360), (26880, 30506)]