20806324

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{1571}}^1$

素因数の和:1636

約数の個数: 48

約数和(自身を含む): 46480896

約数和(自身を除く): 25674572

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 43, 44, 77, 86, 154, 172, 301, 308, 473, 602, 946, 1204, 1571, 1892, 3142, 3311, 6284, 6622, 10997, 13244, 17281, 21994, 34562, 43988, 67553, 69124, 120967, 135106, 241934, 270212, 472871, 483868, 743083, 945742, 1486166, 1891484, 2972332, 5201581, 10403162, 20806324]

約数ペア:

[(1, 20806324), (2, 10403162), (4, 5201581), (7, 2972332), (11, 1891484), (14, 1486166), (22, 945742), (28, 743083), (43, 483868), (44, 472871), (77, 270212), (86, 241934), (154, 135106), (172, 120967), (301, 69124), (308, 67553), (473, 43988), (602, 34562), (946, 21994), (1204, 17281), (1571, 13244), (1892, 10997), (3142, 6622), (3311, 6284)]