21807360

素因数分解:

$2^8\times 3^3\times 5^1\times {\mathrm{631}}^1$

素因数の和:661

約数の個数: 144

約数和(自身を含む): 77508480

約数和(自身を除く): 55701120

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 32, 36, 40, 45, 48, 54, 60, 64, 72, 80, 90, 96, 108, 120, 128, 135, 144, 160, 180, 192, 216, 240, 256, 270, 288, 320, 360, 384, 432, 480, 540, 576, 631, 640, 720, 768, 864, 960, 1080, 1152, 1262, 1280, 1440, 1728, 1893, 1920, 2160, 2304, 2524, 2880, 3155, 3456, 3786, 3840, 4320, 5048, 5679, 5760, 6310, 6912, 7572, 8640, 9465, 10096, 11358, 11520, 12620, 15144, 17037, 17280, 18930, 20192, 22716, 25240, 28395, 30288, 34074, 34560, 37860, 40384, 45432, 50480, 56790, 60576, 68148, 75720, 80768, 85185, 90864, 100960, 113580, 121152, 136296, 151440, 161536, 170370, 181728, 201920, 227160, 242304, 272592, 302880, 340740, 363456, 403840, 454320, 484608, 545184, 605760, 681480, 726912, 807680, 908640, 1090368, 1211520, 1362960, 1453824, 1817280, 2180736, 2423040, 2725920, 3634560, 4361472, 5451840, 7269120, 10903680, 21807360]

約数ペア:

[(1, 21807360), (2, 10903680), (3, 7269120), (4, 5451840), (5, 4361472), (6, 3634560), (8, 2725920), (9, 2423040), (10, 2180736), (12, 1817280), (15, 1453824), (16, 1362960), (18, 1211520), (20, 1090368), (24, 908640), (27, 807680), (30, 726912), (32, 681480), (36, 605760), (40, 545184), (45, 484608), (48, 454320), (54, 403840), (60, 363456), (64, 340740), (72, 302880), (80, 272592), (90, 242304), (96, 227160), (108, 201920), (120, 181728), (128, 170370), (135, 161536), (144, 151440), (160, 136296), (180, 121152), (192, 113580), (216, 100960), (240, 90864), (256, 85185), (270, 80768), (288, 75720), (320, 68148), (360, 60576), (384, 56790), (432, 50480), (480, 45432), (540, 40384), (576, 37860), (631, 34560), (640, 34074), (720, 30288), (768, 28395), (864, 25240), (960, 22716), (1080, 20192), (1152, 18930), (1262, 17280), (1280, 17037), (1440, 15144), (1728, 12620), (1893, 11520), (1920, 11358), (2160, 10096), (2304, 9465), (2524, 8640), (2880, 7572), (3155, 6912), (3456, 6310), (3786, 5760), (3840, 5679), (4320, 5048)]