257081440

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{11}}^2\times {\mathrm{271}}^1$

素因数の和:322

約数の個数: 216

約数和(自身を含む): 779448096

約数和(自身を除く): 522366656

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 32, 35, 40, 44, 49, 55, 56, 70, 77, 80, 88, 98, 110, 112, 121, 140, 154, 160, 176, 196, 220, 224, 242, 245, 271, 280, 308, 352, 385, 392, 440, 484, 490, 539, 542, 560, 605, 616, 770, 784, 847, 880, 968, 980, 1078, 1084, 1120, 1210, 1232, 1355, 1540, 1568, 1694, 1760, 1897, 1936, 1960, 2156, 2168, 2420, 2464, 2695, 2710, 2981, 3080, 3388, 3794, 3872, 3920, 4235, 4312, 4336, 4840, 5390, 5420, 5929, 5962, 6160, 6776, 7588, 7840, 8470, 8624, 8672, 9485, 9680, 10780, 10840, 11858, 11924, 12320, 13279, 13552, 14905, 15176, 16940, 17248, 18970, 19360, 20867, 21560, 21680, 23716, 23848, 26558, 27104, 29645, 29810, 30352, 32791, 33880, 37940, 41734, 43120, 43360, 47432, 47696, 53116, 59290, 59620, 60704, 65582, 66395, 67760, 75880, 83468, 86240, 94864, 95392, 104335, 106232, 118580, 119240, 131164, 132790, 135520, 146069, 151760, 163955, 166936, 189728, 208670, 212464, 229537, 237160, 238480, 262328, 265580, 292138, 303520, 327910, 333872, 417340, 424928, 459074, 474320, 476960, 524656, 531160, 584276, 655820, 667744, 730345, 834680, 918148, 948640, 1049312, 1062320, 1147685, 1168552, 1311640, 1460690, 1606759, 1669360, 1836296, 2124640, 2295370, 2337104, 2623280, 2921380, 3213518, 3338720, 3672592, 4590740, 4674208, 5246560, 5842760, 6427036, 7345184, 8033795, 9181480, 11685520, 12854072, 16067590, 18362960, 23371040, 25708144, 32135180, 36725920, 51416288, 64270360, 128540720, 257081440]

約数ペア:

[(1, 257081440), (2, 128540720), (4, 64270360), (5, 51416288), (7, 36725920), (8, 32135180), (10, 25708144), (11, 23371040), (14, 18362960), (16, 16067590), (20, 12854072), (22, 11685520), (28, 9181480), (32, 8033795), (35, 7345184), (40, 6427036), (44, 5842760), (49, 5246560), (55, 4674208), (56, 4590740), (70, 3672592), (77, 3338720), (80, 3213518), (88, 2921380), (98, 2623280), (110, 2337104), (112, 2295370), (121, 2124640), (140, 1836296), (154, 1669360), (160, 1606759), (176, 1460690), (196, 1311640), (220, 1168552), (224, 1147685), (242, 1062320), (245, 1049312), (271, 948640), (280, 918148), (308, 834680), (352, 730345), (385, 667744), (392, 655820), (440, 584276), (484, 531160), (490, 524656), (539, 476960), (542, 474320), (560, 459074), (605, 424928), (616, 417340), (770, 333872), (784, 327910), (847, 303520), (880, 292138), (968, 265580), (980, 262328), (1078, 238480), (1084, 237160), (1120, 229537), (1210, 212464), (1232, 208670), (1355, 189728), (1540, 166936), (1568, 163955), (1694, 151760), (1760, 146069), (1897, 135520), (1936, 132790), (1960, 131164), (2156, 119240), (2168, 118580), (2420, 106232), (2464, 104335), (2695, 95392), (2710, 94864), (2981, 86240), (3080, 83468), (3388, 75880), (3794, 67760), (3872, 66395), (3920, 65582), (4235, 60704), (4312, 59620), (4336, 59290), (4840, 53116), (5390, 47696), (5420, 47432), (5929, 43360), (5962, 43120), (6160, 41734), (6776, 37940), (7588, 33880), (7840, 32791), (8470, 30352), (8624, 29810), (8672, 29645), (9485, 27104), (9680, 26558), (10780, 23848), (10840, 23716), (11858, 21680), (11924, 21560), (12320, 20867), (13279, 19360), (13552, 18970), (14905, 17248), (15176, 16940)]