20784288

素因数分解:

$2^5\times 3^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{197}}^1$

素因数の和:374

約数の個数: 96

約数和(自身を含む): 63068544

約数和(自身を除く): 42284256

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 32, 42, 48, 56, 84, 96, 112, 157, 168, 197, 224, 314, 336, 394, 471, 591, 628, 672, 788, 942, 1099, 1182, 1256, 1379, 1576, 1884, 2198, 2364, 2512, 2758, 3152, 3297, 3768, 4137, 4396, 4728, 5024, 5516, 6304, 6594, 7536, 8274, 8792, 9456, 11032, 13188, 15072, 16548, 17584, 18912, 22064, 26376, 30929, 33096, 35168, 44128, 52752, 61858, 66192, 92787, 105504, 123716, 132384, 185574, 216503, 247432, 371148, 433006, 494864, 649509, 742296, 866012, 989728, 1299018, 1484592, 1732024, 2598036, 2969184, 3464048, 5196072, 6928096, 10392144, 20784288]

約数ペア:

[(1, 20784288), (2, 10392144), (3, 6928096), (4, 5196072), (6, 3464048), (7, 2969184), (8, 2598036), (12, 1732024), (14, 1484592), (16, 1299018), (21, 989728), (24, 866012), (28, 742296), (32, 649509), (42, 494864), (48, 433006), (56, 371148), (84, 247432), (96, 216503), (112, 185574), (157, 132384), (168, 123716), (197, 105504), (224, 92787), (314, 66192), (336, 61858), (394, 52752), (471, 44128), (591, 35168), (628, 33096), (672, 30929), (788, 26376), (942, 22064), (1099, 18912), (1182, 17584), (1256, 16548), (1379, 15072), (1576, 13188), (1884, 11032), (2198, 9456), (2364, 8792), (2512, 8274), (2758, 7536), (3152, 6594), (3297, 6304), (3768, 5516), (4137, 5024), (4396, 4728)]