256488120

素因数分解:

$2^3\times 3^4\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{263}}^1$

素因数の和:336

約数の個数: 320

約数和(自身を含む): 1011985920

約数和(自身を除く): 755497800

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 42, 43, 45, 54, 56, 60, 63, 70, 72, 81, 84, 86, 90, 105, 108, 120, 126, 129, 135, 140, 162, 168, 172, 180, 189, 210, 215, 216, 252, 258, 263, 270, 280, 301, 315, 324, 344, 360, 378, 387, 405, 420, 430, 504, 516, 526, 540, 567, 602, 630, 645, 648, 756, 774, 789, 810, 840, 860, 903, 945, 1032, 1052, 1080, 1134, 1161, 1204, 1260, 1290, 1315, 1505, 1512, 1548, 1578, 1620, 1720, 1806, 1841, 1890, 1935, 2104, 2268, 2322, 2367, 2408, 2520, 2580, 2630, 2709, 2835, 3010, 3096, 3156, 3240, 3483, 3612, 3682, 3780, 3870, 3945, 4515, 4536, 4644, 4734, 5160, 5260, 5418, 5523, 5670, 5805, 6020, 6312, 6966, 7101, 7224, 7364, 7560, 7740, 7890, 8127, 9030, 9205, 9288, 9468, 10520, 10836, 11046, 11309, 11340, 11610, 11835, 12040, 13545, 13932, 14202, 14728, 15480, 15780, 16254, 16569, 17415, 18060, 18410, 18936, 21303, 21672, 22092, 22618, 22680, 23220, 23670, 24381, 27090, 27615, 27864, 28404, 31560, 32508, 33138, 33927, 34830, 35505, 36120, 36820, 40635, 42606, 44184, 45236, 46440, 47340, 48762, 49707, 54180, 55230, 56545, 56808, 65016, 66276, 67854, 69660, 71010, 73640, 79163, 81270, 82845, 85212, 90472, 94680, 97524, 99414, 101781, 106515, 108360, 110460, 113090, 121905, 132552, 135708, 139320, 142020, 149121, 158326, 162540, 165690, 169635, 170424, 195048, 198828, 203562, 213030, 220920, 226180, 237489, 243810, 248535, 271416, 284040, 298242, 305343, 316652, 325080, 331380, 339270, 395815, 397656, 407124, 426060, 452360, 474978, 487620, 497070, 508905, 596484, 610686, 633304, 662760, 678540, 712467, 745605, 791630, 814248, 852120, 916029, 949956, 975240, 994140, 1017810, 1187445, 1192968, 1221372, 1357080, 1424934, 1491210, 1526715, 1583260, 1832058, 1899912, 1988280, 2035620, 2137401, 2374890, 2442744, 2849868, 2982420, 3053430, 3166520, 3562335, 3664116, 4071240, 4274802, 4580145, 4749780, 5699736, 5964840, 6106860, 6412203, 7124670, 7328232, 8549604, 9160290, 9499560, 10687005, 12213720, 12824406, 14249340, 17099208, 18320580, 21374010, 25648812, 28498680, 32061015, 36641160, 42748020, 51297624, 64122030, 85496040, 128244060, 256488120]

約数ペア:

[(1, 256488120), (2, 128244060), (3, 85496040), (4, 64122030), (5, 51297624), (6, 42748020), (7, 36641160), (8, 32061015), (9, 28498680), (10, 25648812), (12, 21374010), (14, 18320580), (15, 17099208), (18, 14249340), (20, 12824406), (21, 12213720), (24, 10687005), (27, 9499560), (28, 9160290), (30, 8549604), (35, 7328232), (36, 7124670), (40, 6412203), (42, 6106860), (43, 5964840), (45, 5699736), (54, 4749780), (56, 4580145), (60, 4274802), (63, 4071240), (70, 3664116), (72, 3562335), (81, 3166520), (84, 3053430), (86, 2982420), (90, 2849868), (105, 2442744), (108, 2374890), (120, 2137401), (126, 2035620), (129, 1988280), (135, 1899912), (140, 1832058), (162, 1583260), (168, 1526715), (172, 1491210), (180, 1424934), (189, 1357080), (210, 1221372), (215, 1192968), (216, 1187445), (252, 1017810), (258, 994140), (263, 975240), (270, 949956), (280, 916029), (301, 852120), (315, 814248), (324, 791630), (344, 745605), (360, 712467), (378, 678540), (387, 662760), (405, 633304), (420, 610686), (430, 596484), (504, 508905), (516, 497070), (526, 487620), (540, 474978), (567, 452360), (602, 426060), (630, 407124), (645, 397656), (648, 395815), (756, 339270), (774, 331380), (789, 325080), (810, 316652), (840, 305343), (860, 298242), (903, 284040), (945, 271416), (1032, 248535), (1052, 243810), (1080, 237489), (1134, 226180), (1161, 220920), (1204, 213030), (1260, 203562), (1290, 198828), (1315, 195048), (1505, 170424), (1512, 169635), (1548, 165690), (1578, 162540), (1620, 158326), (1720, 149121), (1806, 142020), (1841, 139320), (1890, 135708), (1935, 132552), (2104, 121905), (2268, 113090), (2322, 110460), (2367, 108360), (2408, 106515), (2520, 101781), (2580, 99414), (2630, 97524), (2709, 94680), (2835, 90472), (3010, 85212), (3096, 82845), (3156, 81270), (3240, 79163), (3483, 73640), (3612, 71010), (3682, 69660), (3780, 67854), (3870, 66276), (3945, 65016), (4515, 56808), (4536, 56545), (4644, 55230), (4734, 54180), (5160, 49707), (5260, 48762), (5418, 47340), (5523, 46440), (5670, 45236), (5805, 44184), (6020, 42606), (6312, 40635), (6966, 36820), (7101, 36120), (7224, 35505), (7364, 34830), (7560, 33927), (7740, 33138), (7890, 32508), (8127, 31560), (9030, 28404), (9205, 27864), (9288, 27615), (9468, 27090), (10520, 24381), (10836, 23670), (11046, 23220), (11309, 22680), (11340, 22618), (11610, 22092), (11835, 21672), (12040, 21303), (13545, 18936), (13932, 18410), (14202, 18060), (14728, 17415), (15480, 16569), (15780, 16254)]