21581568

素因数分解:

$2^8\times 3^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1$

素因数の和:87

約数の個数: 216

約数和(自身を含む): 71744400

約数和(自身を除く): 50162832

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 17, 18, 19, 24, 29, 32, 34, 36, 38, 48, 51, 57, 58, 64, 68, 72, 76, 87, 96, 102, 114, 116, 128, 136, 144, 152, 153, 171, 174, 192, 204, 228, 232, 256, 261, 272, 288, 304, 306, 323, 342, 348, 384, 408, 456, 464, 493, 522, 544, 551, 576, 608, 612, 646, 684, 696, 768, 816, 912, 928, 969, 986, 1044, 1088, 1102, 1152, 1216, 1224, 1292, 1368, 1392, 1479, 1632, 1653, 1824, 1856, 1938, 1972, 2088, 2176, 2204, 2304, 2432, 2448, 2584, 2736, 2784, 2907, 2958, 3264, 3306, 3648, 3712, 3876, 3944, 4176, 4352, 4408, 4437, 4864, 4896, 4959, 5168, 5472, 5568, 5814, 5916, 6528, 6612, 7296, 7424, 7752, 7888, 8352, 8816, 8874, 9367, 9792, 9918, 10336, 10944, 11136, 11628, 11832, 13056, 13224, 14592, 15504, 15776, 16704, 17632, 17748, 18734, 19584, 19836, 20672, 21888, 22272, 23256, 23664, 26448, 28101, 31008, 31552, 33408, 35264, 35496, 37468, 39168, 39672, 41344, 43776, 46512, 47328, 52896, 56202, 62016, 63104, 66816, 70528, 70992, 74936, 79344, 82688, 84303, 93024, 94656, 105792, 112404, 124032, 126208, 141056, 141984, 149872, 158688, 168606, 186048, 189312, 211584, 224808, 248064, 283968, 299744, 317376, 337212, 372096, 378624, 423168, 449616, 567936, 599488, 634752, 674424, 744192, 899232, 1135872, 1198976, 1269504, 1348848, 1798464, 2397952, 2697696, 3596928, 5395392, 7193856, 10790784, 21581568]

約数ペア:

[(1, 21581568), (2, 10790784), (3, 7193856), (4, 5395392), (6, 3596928), (8, 2697696), (9, 2397952), (12, 1798464), (16, 1348848), (17, 1269504), (18, 1198976), (19, 1135872), (24, 899232), (29, 744192), (32, 674424), (34, 634752), (36, 599488), (38, 567936), (48, 449616), (51, 423168), (57, 378624), (58, 372096), (64, 337212), (68, 317376), (72, 299744), (76, 283968), (87, 248064), (96, 224808), (102, 211584), (114, 189312), (116, 186048), (128, 168606), (136, 158688), (144, 149872), (152, 141984), (153, 141056), (171, 126208), (174, 124032), (192, 112404), (204, 105792), (228, 94656), (232, 93024), (256, 84303), (261, 82688), (272, 79344), (288, 74936), (304, 70992), (306, 70528), (323, 66816), (342, 63104), (348, 62016), (384, 56202), (408, 52896), (456, 47328), (464, 46512), (493, 43776), (522, 41344), (544, 39672), (551, 39168), (576, 37468), (608, 35496), (612, 35264), (646, 33408), (684, 31552), (696, 31008), (768, 28101), (816, 26448), (912, 23664), (928, 23256), (969, 22272), (986, 21888), (1044, 20672), (1088, 19836), (1102, 19584), (1152, 18734), (1216, 17748), (1224, 17632), (1292, 16704), (1368, 15776), (1392, 15504), (1479, 14592), (1632, 13224), (1653, 13056), (1824, 11832), (1856, 11628), (1938, 11136), (1972, 10944), (2088, 10336), (2176, 9918), (2204, 9792), (2304, 9367), (2432, 8874), (2448, 8816), (2584, 8352), (2736, 7888), (2784, 7752), (2907, 7424), (2958, 7296), (3264, 6612), (3306, 6528), (3648, 5916), (3712, 5814), (3876, 5568), (3944, 5472), (4176, 5168), (4352, 4959), (4408, 4896), (4437, 4864)]