20659968

素因数分解:

$2^8\times 3^3\times 7^2\times {\mathrm{61}}^1$

素因数の和:100

約数の個数: 216

約数和(自身を含む): 72234960

約数和(自身を除く): 51574992

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 27, 28, 32, 36, 42, 48, 49, 54, 56, 61, 63, 64, 72, 84, 96, 98, 108, 112, 122, 126, 128, 144, 147, 168, 183, 189, 192, 196, 216, 224, 244, 252, 256, 288, 294, 336, 366, 378, 384, 392, 427, 432, 441, 448, 488, 504, 549, 576, 588, 672, 732, 756, 768, 784, 854, 864, 882, 896, 976, 1008, 1098, 1152, 1176, 1281, 1323, 1344, 1464, 1512, 1568, 1647, 1708, 1728, 1764, 1792, 1952, 2016, 2196, 2304, 2352, 2562, 2646, 2688, 2928, 2989, 3024, 3136, 3294, 3416, 3456, 3528, 3843, 3904, 4032, 4392, 4704, 5124, 5292, 5376, 5856, 5978, 6048, 6272, 6588, 6832, 6912, 7056, 7686, 7808, 8064, 8784, 8967, 9408, 10248, 10584, 11529, 11712, 11956, 12096, 12544, 13176, 13664, 14112, 15372, 15616, 16128, 17568, 17934, 18816, 20496, 21168, 23058, 23424, 23912, 24192, 26352, 26901, 27328, 28224, 30744, 35136, 35868, 37632, 40992, 42336, 46116, 46848, 47824, 48384, 52704, 53802, 54656, 56448, 61488, 70272, 71736, 80703, 81984, 84672, 92232, 95648, 105408, 107604, 109312, 112896, 122976, 140544, 143472, 161406, 163968, 169344, 184464, 191296, 210816, 215208, 245952, 286944, 322812, 327936, 338688, 368928, 382592, 421632, 430416, 491904, 573888, 645624, 737856, 765184, 860832, 983808, 1147776, 1291248, 1475712, 1721664, 2295552, 2582496, 2951424, 3443328, 5164992, 6886656, 10329984, 20659968]

約数ペア:

[(1, 20659968), (2, 10329984), (3, 6886656), (4, 5164992), (6, 3443328), (7, 2951424), (8, 2582496), (9, 2295552), (12, 1721664), (14, 1475712), (16, 1291248), (18, 1147776), (21, 983808), (24, 860832), (27, 765184), (28, 737856), (32, 645624), (36, 573888), (42, 491904), (48, 430416), (49, 421632), (54, 382592), (56, 368928), (61, 338688), (63, 327936), (64, 322812), (72, 286944), (84, 245952), (96, 215208), (98, 210816), (108, 191296), (112, 184464), (122, 169344), (126, 163968), (128, 161406), (144, 143472), (147, 140544), (168, 122976), (183, 112896), (189, 109312), (192, 107604), (196, 105408), (216, 95648), (224, 92232), (244, 84672), (252, 81984), (256, 80703), (288, 71736), (294, 70272), (336, 61488), (366, 56448), (378, 54656), (384, 53802), (392, 52704), (427, 48384), (432, 47824), (441, 46848), (448, 46116), (488, 42336), (504, 40992), (549, 37632), (576, 35868), (588, 35136), (672, 30744), (732, 28224), (756, 27328), (768, 26901), (784, 26352), (854, 24192), (864, 23912), (882, 23424), (896, 23058), (976, 21168), (1008, 20496), (1098, 18816), (1152, 17934), (1176, 17568), (1281, 16128), (1323, 15616), (1344, 15372), (1464, 14112), (1512, 13664), (1568, 13176), (1647, 12544), (1708, 12096), (1728, 11956), (1764, 11712), (1792, 11529), (1952, 10584), (2016, 10248), (2196, 9408), (2304, 8967), (2352, 8784), (2562, 8064), (2646, 7808), (2688, 7686), (2928, 7056), (2989, 6912), (3024, 6832), (3136, 6588), (3294, 6272), (3416, 6048), (3456, 5978), (3528, 5856), (3843, 5376), (3904, 5292), (4032, 5124), (4392, 4704)]