20871648

素因数分解:

$2^5\times 3^3\times 7^2\times {\mathrm{17}}^1\times {\mathrm{29}}^1$

素因数の和:79

約数の個数: 288

約数和(自身を含む): 77565600

約数和(自身を除く): 56693952

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 17, 18, 21, 24, 27, 28, 29, 32, 34, 36, 42, 48, 49, 51, 54, 56, 58, 63, 68, 72, 84, 87, 96, 98, 102, 108, 112, 116, 119, 126, 136, 144, 147, 153, 168, 174, 189, 196, 203, 204, 216, 224, 232, 238, 252, 261, 272, 288, 294, 306, 336, 348, 357, 378, 392, 406, 408, 432, 441, 459, 464, 476, 493, 504, 522, 544, 588, 609, 612, 672, 696, 714, 756, 783, 784, 812, 816, 833, 864, 882, 918, 928, 952, 986, 1008, 1044, 1071, 1176, 1218, 1224, 1323, 1392, 1421, 1428, 1479, 1512, 1566, 1568, 1624, 1632, 1666, 1764, 1827, 1836, 1904, 1972, 2016, 2088, 2142, 2352, 2436, 2448, 2499, 2646, 2784, 2842, 2856, 2958, 3024, 3132, 3213, 3248, 3332, 3451, 3528, 3654, 3672, 3808, 3944, 4176, 4263, 4284, 4437, 4704, 4872, 4896, 4998, 5292, 5481, 5684, 5712, 5916, 6048, 6264, 6426, 6496, 6664, 6902, 7056, 7308, 7344, 7497, 7888, 8352, 8526, 8568, 8874, 9744, 9996, 10353, 10584, 10962, 11368, 11424, 11832, 12528, 12789, 12852, 13311, 13328, 13804, 14112, 14616, 14688, 14994, 15776, 17052, 17136, 17748, 19488, 19992, 20706, 21168, 21924, 22491, 22736, 23664, 24157, 25056, 25578, 25704, 26622, 26656, 27608, 29232, 29988, 31059, 34104, 34272, 35496, 38367, 39984, 41412, 42336, 43848, 44982, 45472, 47328, 48314, 51156, 51408, 53244, 55216, 58464, 59976, 62118, 68208, 70992, 72471, 76734, 79968, 82824, 87696, 89964, 93177, 96628, 102312, 102816, 106488, 110432, 119952, 124236, 136416, 141984, 144942, 153468, 165648, 175392, 179928, 186354, 193256, 204624, 212976, 217413, 239904, 248472, 289884, 306936, 331296, 359856, 372708, 386512, 409248, 425952, 434826, 496944, 579768, 613872, 652239, 719712, 745416, 773024, 869652, 993888, 1159536, 1227744, 1304478, 1490832, 1739304, 2319072, 2608956, 2981664, 3478608, 5217912, 6957216, 10435824, 20871648]

約数ペア:

[(1, 20871648), (2, 10435824), (3, 6957216), (4, 5217912), (6, 3478608), (7, 2981664), (8, 2608956), (9, 2319072), (12, 1739304), (14, 1490832), (16, 1304478), (17, 1227744), (18, 1159536), (21, 993888), (24, 869652), (27, 773024), (28, 745416), (29, 719712), (32, 652239), (34, 613872), (36, 579768), (42, 496944), (48, 434826), (49, 425952), (51, 409248), (54, 386512), (56, 372708), (58, 359856), (63, 331296), (68, 306936), (72, 289884), (84, 248472), (87, 239904), (96, 217413), (98, 212976), (102, 204624), (108, 193256), (112, 186354), (116, 179928), (119, 175392), (126, 165648), (136, 153468), (144, 144942), (147, 141984), (153, 136416), (168, 124236), (174, 119952), (189, 110432), (196, 106488), (203, 102816), (204, 102312), (216, 96628), (224, 93177), (232, 89964), (238, 87696), (252, 82824), (261, 79968), (272, 76734), (288, 72471), (294, 70992), (306, 68208), (336, 62118), (348, 59976), (357, 58464), (378, 55216), (392, 53244), (406, 51408), (408, 51156), (432, 48314), (441, 47328), (459, 45472), (464, 44982), (476, 43848), (493, 42336), (504, 41412), (522, 39984), (544, 38367), (588, 35496), (609, 34272), (612, 34104), (672, 31059), (696, 29988), (714, 29232), (756, 27608), (783, 26656), (784, 26622), (812, 25704), (816, 25578), (833, 25056), (864, 24157), (882, 23664), (918, 22736), (928, 22491), (952, 21924), (986, 21168), (1008, 20706), (1044, 19992), (1071, 19488), (1176, 17748), (1218, 17136), (1224, 17052), (1323, 15776), (1392, 14994), (1421, 14688), (1428, 14616), (1479, 14112), (1512, 13804), (1566, 13328), (1568, 13311), (1624, 12852), (1632, 12789), (1666, 12528), (1764, 11832), (1827, 11424), (1836, 11368), (1904, 10962), (1972, 10584), (2016, 10353), (2088, 9996), (2142, 9744), (2352, 8874), (2436, 8568), (2448, 8526), (2499, 8352), (2646, 7888), (2784, 7497), (2842, 7344), (2856, 7308), (2958, 7056), (3024, 6902), (3132, 6664), (3213, 6496), (3248, 6426), (3332, 6264), (3451, 6048), (3528, 5916), (3654, 5712), (3672, 5684), (3808, 5481), (3944, 5292), (4176, 4998), (4263, 4896), (4284, 4872), (4437, 4704)]