20949544

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{479}}^1$

素因数の和:574

約数の個数: 64

約数和(自身を含む): 49766400

約数和(自身を除く): 28816856

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 44, 56, 71, 77, 88, 142, 154, 284, 308, 479, 497, 568, 616, 781, 958, 994, 1562, 1916, 1988, 3124, 3353, 3832, 3976, 5269, 5467, 6248, 6706, 10538, 10934, 13412, 21076, 21868, 26824, 34009, 36883, 42152, 43736, 68018, 73766, 136036, 147532, 238063, 272072, 295064, 374099, 476126, 748198, 952252, 1496396, 1904504, 2618693, 2992792, 5237386, 10474772, 20949544]

約数ペア:

[(1, 20949544), (2, 10474772), (4, 5237386), (7, 2992792), (8, 2618693), (11, 1904504), (14, 1496396), (22, 952252), (28, 748198), (44, 476126), (56, 374099), (71, 295064), (77, 272072), (88, 238063), (142, 147532), (154, 136036), (284, 73766), (308, 68018), (479, 43736), (497, 42152), (568, 36883), (616, 34009), (781, 26824), (958, 21868), (994, 21076), (1562, 13412), (1916, 10934), (1988, 10538), (3124, 6706), (3353, 6248), (3832, 5467), (3976, 5269)]