257349120

素因数分解:

$2^9\times 3^1\times 5^1\times 7^1\times {\mathrm{4787}}^1$

素因数の和:4820

約数の個数: 160

約数和(自身を含む): 940439808

約数和(自身を除く): 683090688

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 48, 56, 60, 64, 70, 80, 84, 96, 105, 112, 120, 128, 140, 160, 168, 192, 210, 224, 240, 256, 280, 320, 336, 384, 420, 448, 480, 512, 560, 640, 672, 768, 840, 896, 960, 1120, 1280, 1344, 1536, 1680, 1792, 1920, 2240, 2560, 2688, 3360, 3584, 3840, 4480, 4787, 5376, 6720, 7680, 8960, 9574, 10752, 13440, 14361, 17920, 19148, 23935, 26880, 28722, 33509, 38296, 47870, 53760, 57444, 67018, 71805, 76592, 95740, 100527, 114888, 134036, 143610, 153184, 167545, 191480, 201054, 229776, 268072, 287220, 306368, 335090, 382960, 402108, 459552, 502635, 536144, 574440, 612736, 670180, 765920, 804216, 919104, 1005270, 1072288, 1148880, 1225472, 1340360, 1531840, 1608432, 1838208, 2010540, 2144576, 2297760, 2450944, 2680720, 3063680, 3216864, 3676416, 4021080, 4289152, 4595520, 5361440, 6127360, 6433728, 7352832, 8042160, 8578304, 9191040, 10722880, 12254720, 12867456, 16084320, 17156608, 18382080, 21445760, 25734912, 32168640, 36764160, 42891520, 51469824, 64337280, 85783040, 128674560, 257349120]

約数ペア:

[(1, 257349120), (2, 128674560), (3, 85783040), (4, 64337280), (5, 51469824), (6, 42891520), (7, 36764160), (8, 32168640), (10, 25734912), (12, 21445760), (14, 18382080), (15, 17156608), (16, 16084320), (20, 12867456), (21, 12254720), (24, 10722880), (28, 9191040), (30, 8578304), (32, 8042160), (35, 7352832), (40, 6433728), (42, 6127360), (48, 5361440), (56, 4595520), (60, 4289152), (64, 4021080), (70, 3676416), (80, 3216864), (84, 3063680), (96, 2680720), (105, 2450944), (112, 2297760), (120, 2144576), (128, 2010540), (140, 1838208), (160, 1608432), (168, 1531840), (192, 1340360), (210, 1225472), (224, 1148880), (240, 1072288), (256, 1005270), (280, 919104), (320, 804216), (336, 765920), (384, 670180), (420, 612736), (448, 574440), (480, 536144), (512, 502635), (560, 459552), (640, 402108), (672, 382960), (768, 335090), (840, 306368), (896, 287220), (960, 268072), (1120, 229776), (1280, 201054), (1344, 191480), (1536, 167545), (1680, 153184), (1792, 143610), (1920, 134036), (2240, 114888), (2560, 100527), (2688, 95740), (3360, 76592), (3584, 71805), (3840, 67018), (4480, 57444), (4787, 53760), (5376, 47870), (6720, 38296), (7680, 33509), (8960, 28722), (9574, 26880), (10752, 23935), (13440, 19148), (14361, 17920)]