20257072

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{179}}^1\times {\mathrm{643}}^1$

素因数の和:841

約数の個数: 40

約数和(自身を含む): 43122240

約数和(自身を除く): 22865168

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 179, 358, 643, 716, 1286, 1432, 1969, 2572, 2864, 3938, 5144, 7073, 7876, 10288, 14146, 15752, 28292, 31504, 56584, 113168, 115097, 230194, 460388, 920776, 1266067, 1841552, 2532134, 5064268, 10128536, 20257072]

約数ペア:

[(1, 20257072), (2, 10128536), (4, 5064268), (8, 2532134), (11, 1841552), (16, 1266067), (22, 920776), (44, 460388), (88, 230194), (176, 115097), (179, 113168), (358, 56584), (643, 31504), (716, 28292), (1286, 15752), (1432, 14146), (1969, 10288), (2572, 7876), (2864, 7073), (3938, 5144)]