31479840

素因数分解:

$2^5\times 3^4\times 5^1\times 7^1\times {\mathrm{347}}^1$

素因数の和:381

約数の個数: 240

約数和(自身を含む): 127334592

約数和(自身を除く): 95854752

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 27, 28, 30, 32, 35, 36, 40, 42, 45, 48, 54, 56, 60, 63, 70, 72, 80, 81, 84, 90, 96, 105, 108, 112, 120, 126, 135, 140, 144, 160, 162, 168, 180, 189, 210, 216, 224, 240, 252, 270, 280, 288, 315, 324, 336, 347, 360, 378, 405, 420, 432, 480, 504, 540, 560, 567, 630, 648, 672, 694, 720, 756, 810, 840, 864, 945, 1008, 1041, 1080, 1120, 1134, 1260, 1296, 1388, 1440, 1512, 1620, 1680, 1735, 1890, 2016, 2082, 2160, 2268, 2429, 2520, 2592, 2776, 2835, 3024, 3123, 3240, 3360, 3470, 3780, 4164, 4320, 4536, 4858, 5040, 5205, 5552, 5670, 6048, 6246, 6480, 6940, 7287, 7560, 8328, 9072, 9369, 9716, 10080, 10410, 11104, 11340, 12145, 12492, 12960, 13880, 14574, 15120, 15615, 16656, 18144, 18738, 19432, 20820, 21861, 22680, 24290, 24984, 27760, 28107, 29148, 30240, 31230, 33312, 36435, 37476, 38864, 41640, 43722, 45360, 46845, 48580, 49968, 55520, 56214, 58296, 62460, 65583, 72870, 74952, 77728, 83280, 87444, 90720, 93690, 97160, 99936, 109305, 112428, 116592, 124920, 131166, 140535, 145740, 149904, 166560, 174888, 187380, 194320, 196749, 218610, 224856, 233184, 249840, 262332, 281070, 291480, 299808, 327915, 349776, 374760, 388640, 393498, 437220, 449712, 499680, 524664, 562140, 582960, 655830, 699552, 749520, 786996, 874440, 899424, 983745, 1049328, 1124280, 1165920, 1311660, 1499040, 1573992, 1748880, 1967490, 2098656, 2248560, 2623320, 3147984, 3497760, 3934980, 4497120, 5246640, 6295968, 7869960, 10493280, 15739920, 31479840]

約数ペア:

[(1, 31479840), (2, 15739920), (3, 10493280), (4, 7869960), (5, 6295968), (6, 5246640), (7, 4497120), (8, 3934980), (9, 3497760), (10, 3147984), (12, 2623320), (14, 2248560), (15, 2098656), (16, 1967490), (18, 1748880), (20, 1573992), (21, 1499040), (24, 1311660), (27, 1165920), (28, 1124280), (30, 1049328), (32, 983745), (35, 899424), (36, 874440), (40, 786996), (42, 749520), (45, 699552), (48, 655830), (54, 582960), (56, 562140), (60, 524664), (63, 499680), (70, 449712), (72, 437220), (80, 393498), (81, 388640), (84, 374760), (90, 349776), (96, 327915), (105, 299808), (108, 291480), (112, 281070), (120, 262332), (126, 249840), (135, 233184), (140, 224856), (144, 218610), (160, 196749), (162, 194320), (168, 187380), (180, 174888), (189, 166560), (210, 149904), (216, 145740), (224, 140535), (240, 131166), (252, 124920), (270, 116592), (280, 112428), (288, 109305), (315, 99936), (324, 97160), (336, 93690), (347, 90720), (360, 87444), (378, 83280), (405, 77728), (420, 74952), (432, 72870), (480, 65583), (504, 62460), (540, 58296), (560, 56214), (567, 55520), (630, 49968), (648, 48580), (672, 46845), (694, 45360), (720, 43722), (756, 41640), (810, 38864), (840, 37476), (864, 36435), (945, 33312), (1008, 31230), (1041, 30240), (1080, 29148), (1120, 28107), (1134, 27760), (1260, 24984), (1296, 24290), (1388, 22680), (1440, 21861), (1512, 20820), (1620, 19432), (1680, 18738), (1735, 18144), (1890, 16656), (2016, 15615), (2082, 15120), (2160, 14574), (2268, 13880), (2429, 12960), (2520, 12492), (2592, 12145), (2776, 11340), (2835, 11104), (3024, 10410), (3123, 10080), (3240, 9716), (3360, 9369), (3470, 9072), (3780, 8328), (4164, 7560), (4320, 7287), (4536, 6940), (4858, 6480), (5040, 6246), (5205, 6048), (5552, 5670)]