81364864

素因数分解:

$2^7\times 7^1\times {\mathrm{71}}^1\times {\mathrm{1279}}^1$

素因数の和:1371

約数の個数: 64

約数和(自身を含む): 188006400

約数和(自身を除く): 106641536

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 71, 112, 128, 142, 224, 284, 448, 497, 568, 896, 994, 1136, 1279, 1988, 2272, 2558, 3976, 4544, 5116, 7952, 8953, 9088, 10232, 15904, 17906, 20464, 31808, 35812, 40928, 63616, 71624, 81856, 90809, 143248, 163712, 181618, 286496, 363236, 572992, 635663, 726472, 1145984, 1271326, 1452944, 2542652, 2905888, 5085304, 5811776, 10170608, 11623552, 20341216, 40682432, 81364864]

約数ペア:

[(1, 81364864), (2, 40682432), (4, 20341216), (7, 11623552), (8, 10170608), (14, 5811776), (16, 5085304), (28, 2905888), (32, 2542652), (56, 1452944), (64, 1271326), (71, 1145984), (112, 726472), (128, 635663), (142, 572992), (224, 363236), (284, 286496), (448, 181618), (497, 163712), (568, 143248), (896, 90809), (994, 81856), (1136, 71624), (1279, 63616), (1988, 40928), (2272, 35812), (2558, 31808), (3976, 20464), (4544, 17906), (5116, 15904), (7952, 10232), (8953, 9088)]