81555712

素因数分解:

$2^8\times 7^1\times {\mathrm{71}}^1\times {\mathrm{641}}^1$

素因数の和:735

約数の個数: 72

約数和(自身を含む): 188963712

約数和(自身を除く): 107408000

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 71, 112, 128, 142, 224, 256, 284, 448, 497, 568, 641, 896, 994, 1136, 1282, 1792, 1988, 2272, 2564, 3976, 4487, 4544, 5128, 7952, 8974, 9088, 10256, 15904, 17948, 18176, 20512, 31808, 35896, 41024, 45511, 63616, 71792, 82048, 91022, 127232, 143584, 164096, 182044, 287168, 318577, 364088, 574336, 637154, 728176, 1148672, 1274308, 1456352, 2548616, 2912704, 5097232, 5825408, 10194464, 11650816, 20388928, 40777856, 81555712]

約数ペア:

[(1, 81555712), (2, 40777856), (4, 20388928), (7, 11650816), (8, 10194464), (14, 5825408), (16, 5097232), (28, 2912704), (32, 2548616), (56, 1456352), (64, 1274308), (71, 1148672), (112, 728176), (128, 637154), (142, 574336), (224, 364088), (256, 318577), (284, 287168), (448, 182044), (497, 164096), (568, 143584), (641, 127232), (896, 91022), (994, 82048), (1136, 71792), (1282, 63616), (1792, 45511), (1988, 41024), (2272, 35896), (2564, 31808), (3976, 20512), (4487, 18176), (4544, 17948), (5128, 15904), (7952, 10256), (8974, 9088)]