20939904

素因数分解:

$2^7\times 3^3\times {\mathrm{73}}^1\times {\mathrm{83}}^1$

素因数の和:179

約数の個数: 128

約数和(自身を含む): 63403200

約数和(自身を除く): 42463296

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 32, 36, 48, 54, 64, 72, 73, 83, 96, 108, 128, 144, 146, 166, 192, 216, 219, 249, 288, 292, 332, 384, 432, 438, 498, 576, 584, 657, 664, 747, 864, 876, 996, 1152, 1168, 1314, 1328, 1494, 1728, 1752, 1971, 1992, 2241, 2336, 2628, 2656, 2988, 3456, 3504, 3942, 3984, 4482, 4672, 5256, 5312, 5976, 6059, 7008, 7884, 7968, 8964, 9344, 10512, 10624, 11952, 12118, 14016, 15768, 15936, 17928, 18177, 21024, 23904, 24236, 28032, 31536, 31872, 35856, 36354, 42048, 47808, 48472, 54531, 63072, 71712, 72708, 84096, 95616, 96944, 109062, 126144, 143424, 145416, 163593, 193888, 218124, 252288, 286848, 290832, 327186, 387776, 436248, 581664, 654372, 775552, 872496, 1163328, 1308744, 1744992, 2326656, 2617488, 3489984, 5234976, 6979968, 10469952, 20939904]

約数ペア:

[(1, 20939904), (2, 10469952), (3, 6979968), (4, 5234976), (6, 3489984), (8, 2617488), (9, 2326656), (12, 1744992), (16, 1308744), (18, 1163328), (24, 872496), (27, 775552), (32, 654372), (36, 581664), (48, 436248), (54, 387776), (64, 327186), (72, 290832), (73, 286848), (83, 252288), (96, 218124), (108, 193888), (128, 163593), (144, 145416), (146, 143424), (166, 126144), (192, 109062), (216, 96944), (219, 95616), (249, 84096), (288, 72708), (292, 71712), (332, 63072), (384, 54531), (432, 48472), (438, 47808), (498, 42048), (576, 36354), (584, 35856), (657, 31872), (664, 31536), (747, 28032), (864, 24236), (876, 23904), (996, 21024), (1152, 18177), (1168, 17928), (1314, 15936), (1328, 15768), (1494, 14016), (1728, 12118), (1752, 11952), (1971, 10624), (1992, 10512), (2241, 9344), (2336, 8964), (2628, 7968), (2656, 7884), (2988, 7008), (3456, 6059), (3504, 5976), (3942, 5312), (3984, 5256), (4482, 4672)]