257221440

素因数分解:

$2^6\times 3^3\times 5^1\times 7^1\times {\mathrm{4253}}^1$

素因数の和:4286

約数の個数: 224

約数和(自身を含む): 1037295360

約数和(自身を除く): 780073920

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 27, 28, 30, 32, 35, 36, 40, 42, 45, 48, 54, 56, 60, 63, 64, 70, 72, 80, 84, 90, 96, 105, 108, 112, 120, 126, 135, 140, 144, 160, 168, 180, 189, 192, 210, 216, 224, 240, 252, 270, 280, 288, 315, 320, 336, 360, 378, 420, 432, 448, 480, 504, 540, 560, 576, 630, 672, 720, 756, 840, 864, 945, 960, 1008, 1080, 1120, 1260, 1344, 1440, 1512, 1680, 1728, 1890, 2016, 2160, 2240, 2520, 2880, 3024, 3360, 3780, 4032, 4253, 4320, 5040, 6048, 6720, 7560, 8506, 8640, 10080, 12096, 12759, 15120, 17012, 20160, 21265, 25518, 29771, 30240, 34024, 38277, 42530, 51036, 59542, 60480, 63795, 68048, 76554, 85060, 89313, 102072, 114831, 119084, 127590, 136096, 148855, 153108, 170120, 178626, 191385, 204144, 229662, 238168, 255180, 267939, 272192, 297710, 306216, 340240, 357252, 382770, 408288, 446565, 459324, 476336, 510360, 535878, 574155, 595420, 612432, 680480, 714504, 765540, 803817, 816576, 893130, 918648, 952672, 1020720, 1071756, 1148310, 1190840, 1224864, 1339695, 1360960, 1429008, 1531080, 1607634, 1786260, 1837296, 1905344, 2041440, 2143512, 2296620, 2381680, 2449728, 2679390, 2858016, 3062160, 3215268, 3572520, 3674592, 4019085, 4082880, 4287024, 4593240, 4763360, 5358780, 5716032, 6124320, 6430536, 7145040, 7349184, 8038170, 8574048, 9186480, 9526720, 10717560, 12248640, 12861072, 14290080, 16076340, 17148096, 18372960, 21435120, 25722144, 28580160, 32152680, 36745920, 42870240, 51444288, 64305360, 85740480, 128610720, 257221440]

約数ペア:

[(1, 257221440), (2, 128610720), (3, 85740480), (4, 64305360), (5, 51444288), (6, 42870240), (7, 36745920), (8, 32152680), (9, 28580160), (10, 25722144), (12, 21435120), (14, 18372960), (15, 17148096), (16, 16076340), (18, 14290080), (20, 12861072), (21, 12248640), (24, 10717560), (27, 9526720), (28, 9186480), (30, 8574048), (32, 8038170), (35, 7349184), (36, 7145040), (40, 6430536), (42, 6124320), (45, 5716032), (48, 5358780), (54, 4763360), (56, 4593240), (60, 4287024), (63, 4082880), (64, 4019085), (70, 3674592), (72, 3572520), (80, 3215268), (84, 3062160), (90, 2858016), (96, 2679390), (105, 2449728), (108, 2381680), (112, 2296620), (120, 2143512), (126, 2041440), (135, 1905344), (140, 1837296), (144, 1786260), (160, 1607634), (168, 1531080), (180, 1429008), (189, 1360960), (192, 1339695), (210, 1224864), (216, 1190840), (224, 1148310), (240, 1071756), (252, 1020720), (270, 952672), (280, 918648), (288, 893130), (315, 816576), (320, 803817), (336, 765540), (360, 714504), (378, 680480), (420, 612432), (432, 595420), (448, 574155), (480, 535878), (504, 510360), (540, 476336), (560, 459324), (576, 446565), (630, 408288), (672, 382770), (720, 357252), (756, 340240), (840, 306216), (864, 297710), (945, 272192), (960, 267939), (1008, 255180), (1080, 238168), (1120, 229662), (1260, 204144), (1344, 191385), (1440, 178626), (1512, 170120), (1680, 153108), (1728, 148855), (1890, 136096), (2016, 127590), (2160, 119084), (2240, 114831), (2520, 102072), (2880, 89313), (3024, 85060), (3360, 76554), (3780, 68048), (4032, 63795), (4253, 60480), (4320, 59542), (5040, 51036), (6048, 42530), (6720, 38277), (7560, 34024), (8506, 30240), (8640, 29771), (10080, 25518), (12096, 21265), (12759, 20160), (15120, 17012)]