257664960

素因数分解:

$2^6\times 3^2\times 5^1\times 7^1\times {\mathrm{12781}}^1$

素因数の和:12811

約数の個数: 168

約数和(自身を含む): 1012947936

約数和(自身を除く): 755282976

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 32, 35, 36, 40, 42, 45, 48, 56, 60, 63, 64, 70, 72, 80, 84, 90, 96, 105, 112, 120, 126, 140, 144, 160, 168, 180, 192, 210, 224, 240, 252, 280, 288, 315, 320, 336, 360, 420, 448, 480, 504, 560, 576, 630, 672, 720, 840, 960, 1008, 1120, 1260, 1344, 1440, 1680, 2016, 2240, 2520, 2880, 3360, 4032, 5040, 6720, 10080, 12781, 20160, 25562, 38343, 51124, 63905, 76686, 89467, 102248, 115029, 127810, 153372, 178934, 191715, 204496, 230058, 255620, 268401, 306744, 357868, 383430, 408992, 447335, 460116, 511240, 536802, 575145, 613488, 715736, 766860, 805203, 817984, 894670, 920232, 1022480, 1073604, 1150290, 1226976, 1342005, 1431472, 1533720, 1610406, 1789340, 1840464, 2044960, 2147208, 2300580, 2453952, 2684010, 2862944, 3067440, 3220812, 3578680, 3680928, 4026015, 4089920, 4294416, 4601160, 5368020, 5725888, 6134880, 6441624, 7157360, 7361856, 8052030, 8588832, 9202320, 10736040, 12269760, 12883248, 14314720, 16104060, 17177664, 18404640, 21472080, 25766496, 28629440, 32208120, 36809280, 42944160, 51532992, 64416240, 85888320, 128832480, 257664960]

約数ペア:

[(1, 257664960), (2, 128832480), (3, 85888320), (4, 64416240), (5, 51532992), (6, 42944160), (7, 36809280), (8, 32208120), (9, 28629440), (10, 25766496), (12, 21472080), (14, 18404640), (15, 17177664), (16, 16104060), (18, 14314720), (20, 12883248), (21, 12269760), (24, 10736040), (28, 9202320), (30, 8588832), (32, 8052030), (35, 7361856), (36, 7157360), (40, 6441624), (42, 6134880), (45, 5725888), (48, 5368020), (56, 4601160), (60, 4294416), (63, 4089920), (64, 4026015), (70, 3680928), (72, 3578680), (80, 3220812), (84, 3067440), (90, 2862944), (96, 2684010), (105, 2453952), (112, 2300580), (120, 2147208), (126, 2044960), (140, 1840464), (144, 1789340), (160, 1610406), (168, 1533720), (180, 1431472), (192, 1342005), (210, 1226976), (224, 1150290), (240, 1073604), (252, 1022480), (280, 920232), (288, 894670), (315, 817984), (320, 805203), (336, 766860), (360, 715736), (420, 613488), (448, 575145), (480, 536802), (504, 511240), (560, 460116), (576, 447335), (630, 408992), (672, 383430), (720, 357868), (840, 306744), (960, 268401), (1008, 255620), (1120, 230058), (1260, 204496), (1344, 191715), (1440, 178934), (1680, 153372), (2016, 127810), (2240, 115029), (2520, 102248), (2880, 89467), (3360, 76686), (4032, 63905), (5040, 51124), (6720, 38343), (10080, 25562), (12781, 20160)]