20771520

素因数分解:

$2^6\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{281}}^1$

素因数の和:319

約数の個数: 224

約数和(自身を含む): 82515456

約数和(自身を除く): 61743936

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 14, 15, 16, 20, 21, 22, 24, 28, 30, 32, 33, 35, 40, 42, 44, 48, 55, 56, 60, 64, 66, 70, 77, 80, 84, 88, 96, 105, 110, 112, 120, 132, 140, 154, 160, 165, 168, 176, 192, 210, 220, 224, 231, 240, 264, 280, 281, 308, 320, 330, 336, 352, 385, 420, 440, 448, 462, 480, 528, 560, 562, 616, 660, 672, 704, 770, 840, 843, 880, 924, 960, 1056, 1120, 1124, 1155, 1232, 1320, 1344, 1405, 1540, 1680, 1686, 1760, 1848, 1967, 2112, 2240, 2248, 2310, 2464, 2640, 2810, 3080, 3091, 3360, 3372, 3520, 3696, 3934, 4215, 4496, 4620, 4928, 5280, 5620, 5901, 6160, 6182, 6720, 6744, 7392, 7868, 8430, 8992, 9240, 9273, 9835, 10560, 11240, 11802, 12320, 12364, 13488, 14784, 15455, 15736, 16860, 17984, 18480, 18546, 19670, 21637, 22480, 23604, 24640, 24728, 26976, 29505, 30910, 31472, 33720, 36960, 37092, 39340, 43274, 44960, 46365, 47208, 49456, 53952, 59010, 61820, 62944, 64911, 67440, 73920, 74184, 78680, 86548, 89920, 92730, 94416, 98912, 108185, 118020, 123640, 125888, 129822, 134880, 148368, 157360, 173096, 185460, 188832, 197824, 216370, 236040, 247280, 259644, 269760, 296736, 314720, 324555, 346192, 370920, 377664, 432740, 472080, 494560, 519288, 593472, 629440, 649110, 692384, 741840, 865480, 944160, 989120, 1038576, 1298220, 1384768, 1483680, 1730960, 1888320, 2077152, 2596440, 2967360, 3461920, 4154304, 5192880, 6923840, 10385760, 20771520]

約数ペア:

[(1, 20771520), (2, 10385760), (3, 6923840), (4, 5192880), (5, 4154304), (6, 3461920), (7, 2967360), (8, 2596440), (10, 2077152), (11, 1888320), (12, 1730960), (14, 1483680), (15, 1384768), (16, 1298220), (20, 1038576), (21, 989120), (22, 944160), (24, 865480), (28, 741840), (30, 692384), (32, 649110), (33, 629440), (35, 593472), (40, 519288), (42, 494560), (44, 472080), (48, 432740), (55, 377664), (56, 370920), (60, 346192), (64, 324555), (66, 314720), (70, 296736), (77, 269760), (80, 259644), (84, 247280), (88, 236040), (96, 216370), (105, 197824), (110, 188832), (112, 185460), (120, 173096), (132, 157360), (140, 148368), (154, 134880), (160, 129822), (165, 125888), (168, 123640), (176, 118020), (192, 108185), (210, 98912), (220, 94416), (224, 92730), (231, 89920), (240, 86548), (264, 78680), (280, 74184), (281, 73920), (308, 67440), (320, 64911), (330, 62944), (336, 61820), (352, 59010), (385, 53952), (420, 49456), (440, 47208), (448, 46365), (462, 44960), (480, 43274), (528, 39340), (560, 37092), (562, 36960), (616, 33720), (660, 31472), (672, 30910), (704, 29505), (770, 26976), (840, 24728), (843, 24640), (880, 23604), (924, 22480), (960, 21637), (1056, 19670), (1120, 18546), (1124, 18480), (1155, 17984), (1232, 16860), (1320, 15736), (1344, 15455), (1405, 14784), (1540, 13488), (1680, 12364), (1686, 12320), (1760, 11802), (1848, 11240), (1967, 10560), (2112, 9835), (2240, 9273), (2248, 9240), (2310, 8992), (2464, 8430), (2640, 7868), (2810, 7392), (3080, 6744), (3091, 6720), (3360, 6182), (3372, 6160), (3520, 5901), (3696, 5620), (3934, 5280), (4215, 4928), (4496, 4620)]