20986560

素因数分解:

$2^6\times 3^3\times 5^1\times 7^1\times {\mathrm{347}}^1$

素因数の和:380

約数の個数: 224

約数和(自身を含む): 84856320

約数和(自身を除く): 63869760

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, 64, 70, 72, 80, 84, 90, 96, 105, 108, 112, 120, 126, 135, 140, 144, 160, 168, 180, 189, 192, 210, 216, 224, 240, 252, 270, 280, 288, 315, 320, 336, 347, 360, 378, 420, 432, 448, 480, 504, 540, 560, 576, 630, 672, 694, 720, 756, 840, 864, 945, 960, 1008, 1041, 1080, 1120, 1260, 1344, 1388, 1440, 1512, 1680, 1728, 1735, 1890, 2016, 2082, 2160, 2240, 2429, 2520, 2776, 2880, 3024, 3123, 3360, 3470, 3780, 4032, 4164, 4320, 4858, 5040, 5205, 5552, 6048, 6246, 6720, 6940, 7287, 7560, 8328, 8640, 9369, 9716, 10080, 10410, 11104, 12096, 12145, 12492, 13880, 14574, 15120, 15615, 16656, 18738, 19432, 20160, 20820, 21861, 22208, 24290, 24984, 27760, 29148, 30240, 31230, 33312, 36435, 37476, 38864, 41640, 43722, 46845, 48580, 49968, 55520, 58296, 60480, 62460, 65583, 66624, 72870, 74952, 77728, 83280, 87444, 93690, 97160, 99936, 109305, 111040, 116592, 124920, 131166, 145740, 149904, 155456, 166560, 174888, 187380, 194320, 199872, 218610, 233184, 249840, 262332, 291480, 299808, 327915, 333120, 349776, 374760, 388640, 437220, 466368, 499680, 524664, 582960, 599616, 655830, 699552, 749520, 777280, 874440, 999360, 1049328, 1165920, 1311660, 1399104, 1499040, 1748880, 2098656, 2331840, 2623320, 2998080, 3497760, 4197312, 5246640, 6995520, 10493280, 20986560]

約数ペア:

[(1, 20986560), (2, 10493280), (3, 6995520), (4, 5246640), (5, 4197312), (6, 3497760), (7, 2998080), (8, 2623320), (9, 2331840), (10, 2098656), (12, 1748880), (14, 1499040), (15, 1399104), (16, 1311660), (18, 1165920), (20, 1049328), (21, 999360), (24, 874440), (27, 777280), (28, 749520), (30, 699552), (32, 655830), (35, 599616), (36, 582960), (40, 524664), (42, 499680), (45, 466368), (48, 437220), (54, 388640), (56, 374760), (60, 349776), (63, 333120), (64, 327915), (70, 299808), (72, 291480), (80, 262332), (84, 249840), (90, 233184), (96, 218610), (105, 199872), (108, 194320), (112, 187380), (120, 174888), (126, 166560), (135, 155456), (140, 149904), (144, 145740), (160, 131166), (168, 124920), (180, 116592), (189, 111040), (192, 109305), (210, 99936), (216, 97160), (224, 93690), (240, 87444), (252, 83280), (270, 77728), (280, 74952), (288, 72870), (315, 66624), (320, 65583), (336, 62460), (347, 60480), (360, 58296), (378, 55520), (420, 49968), (432, 48580), (448, 46845), (480, 43722), (504, 41640), (540, 38864), (560, 37476), (576, 36435), (630, 33312), (672, 31230), (694, 30240), (720, 29148), (756, 27760), (840, 24984), (864, 24290), (945, 22208), (960, 21861), (1008, 20820), (1041, 20160), (1080, 19432), (1120, 18738), (1260, 16656), (1344, 15615), (1388, 15120), (1440, 14574), (1512, 13880), (1680, 12492), (1728, 12145), (1735, 12096), (1890, 11104), (2016, 10410), (2082, 10080), (2160, 9716), (2240, 9369), (2429, 8640), (2520, 8328), (2776, 7560), (2880, 7287), (3024, 6940), (3123, 6720), (3360, 6246), (3470, 6048), (3780, 5552), (4032, 5205), (4164, 5040), (4320, 4858)]