990399872

素因数分解:

$2^7\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{257}}^1$

素因数の和:329

約数の個数: 256

約数和(自身を含む): 2728442880

約数和(自身を除く): 1738043008

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 17, 22, 23, 28, 32, 34, 44, 46, 56, 64, 68, 77, 88, 92, 112, 119, 128, 136, 154, 161, 176, 184, 187, 224, 238, 253, 257, 272, 308, 322, 352, 368, 374, 391, 448, 476, 506, 514, 544, 616, 644, 704, 736, 748, 782, 896, 952, 1012, 1028, 1088, 1232, 1288, 1309, 1408, 1472, 1496, 1564, 1771, 1799, 1904, 2024, 2056, 2176, 2464, 2576, 2618, 2737, 2827, 2944, 2992, 3128, 3542, 3598, 3808, 4048, 4112, 4301, 4369, 4928, 5152, 5236, 5474, 5654, 5911, 5984, 6256, 7084, 7196, 7616, 8096, 8224, 8602, 8738, 9856, 10304, 10472, 10948, 11308, 11822, 11968, 12512, 14168, 14392, 15232, 16192, 16448, 17204, 17476, 19789, 20608, 20944, 21896, 22616, 23644, 23936, 25024, 28336, 28784, 30107, 30583, 32384, 32896, 34408, 34952, 39578, 41377, 41888, 43792, 45232, 47288, 48059, 50048, 56672, 57568, 60214, 61166, 65021, 68816, 69904, 79156, 82754, 83776, 87584, 90464, 94576, 96118, 100487, 113344, 115136, 120428, 122332, 130042, 137632, 139808, 158312, 165508, 167552, 175168, 180928, 189152, 192236, 200974, 226688, 230272, 240856, 244664, 260084, 275264, 279616, 316624, 331016, 336413, 350336, 361856, 378304, 384472, 401948, 455147, 481712, 489328, 520168, 550528, 559232, 633248, 662032, 672826, 703409, 756608, 768944, 803896, 910294, 963424, 978656, 1040336, 1105357, 1266496, 1324064, 1345652, 1406818, 1537888, 1607792, 1820588, 1926848, 1957312, 2080672, 2210714, 2532992, 2648128, 2691304, 2813636, 3075776, 3215584, 3641176, 3853696, 3914624, 4161344, 4421428, 5296256, 5382608, 5627272, 6151552, 6431168, 7282352, 7737499, 8322688, 8842856, 10765216, 11254544, 12862336, 14564704, 15474998, 17685712, 21530432, 22509088, 29129408, 30949996, 35371424, 43060864, 45018176, 58258816, 61899992, 70742848, 90036352, 123799984, 141485696, 247599968, 495199936, 990399872]

約数ペア:

[(1, 990399872), (2, 495199936), (4, 247599968), (7, 141485696), (8, 123799984), (11, 90036352), (14, 70742848), (16, 61899992), (17, 58258816), (22, 45018176), (23, 43060864), (28, 35371424), (32, 30949996), (34, 29129408), (44, 22509088), (46, 21530432), (56, 17685712), (64, 15474998), (68, 14564704), (77, 12862336), (88, 11254544), (92, 10765216), (112, 8842856), (119, 8322688), (128, 7737499), (136, 7282352), (154, 6431168), (161, 6151552), (176, 5627272), (184, 5382608), (187, 5296256), (224, 4421428), (238, 4161344), (253, 3914624), (257, 3853696), (272, 3641176), (308, 3215584), (322, 3075776), (352, 2813636), (368, 2691304), (374, 2648128), (391, 2532992), (448, 2210714), (476, 2080672), (506, 1957312), (514, 1926848), (544, 1820588), (616, 1607792), (644, 1537888), (704, 1406818), (736, 1345652), (748, 1324064), (782, 1266496), (896, 1105357), (952, 1040336), (1012, 978656), (1028, 963424), (1088, 910294), (1232, 803896), (1288, 768944), (1309, 756608), (1408, 703409), (1472, 672826), (1496, 662032), (1564, 633248), (1771, 559232), (1799, 550528), (1904, 520168), (2024, 489328), (2056, 481712), (2176, 455147), (2464, 401948), (2576, 384472), (2618, 378304), (2737, 361856), (2827, 350336), (2944, 336413), (2992, 331016), (3128, 316624), (3542, 279616), (3598, 275264), (3808, 260084), (4048, 244664), (4112, 240856), (4301, 230272), (4369, 226688), (4928, 200974), (5152, 192236), (5236, 189152), (5474, 180928), (5654, 175168), (5911, 167552), (5984, 165508), (6256, 158312), (7084, 139808), (7196, 137632), (7616, 130042), (8096, 122332), (8224, 120428), (8602, 115136), (8738, 113344), (9856, 100487), (10304, 96118), (10472, 94576), (10948, 90464), (11308, 87584), (11822, 83776), (11968, 82754), (12512, 79156), (14168, 69904), (14392, 68816), (15232, 65021), (16192, 61166), (16448, 60214), (17204, 57568), (17476, 56672), (19789, 50048), (20608, 48059), (20944, 47288), (21896, 45232), (22616, 43792), (23644, 41888), (23936, 41377), (25024, 39578), (28336, 34952), (28784, 34408), (30107, 32896), (30583, 32384)]