20464136

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{239}}^1$

素因数の和:402

約数の個数: 64

約数和(自身を含む): 48384000

約数和(自身を除く): 27919864

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 44, 56, 77, 88, 139, 154, 239, 278, 308, 478, 556, 616, 956, 973, 1112, 1529, 1673, 1912, 1946, 2629, 3058, 3346, 3892, 5258, 6116, 6692, 7784, 10516, 10703, 12232, 13384, 18403, 21032, 21406, 33221, 36806, 42812, 66442, 73612, 85624, 132884, 147224, 232547, 265768, 365431, 465094, 730862, 930188, 1461724, 1860376, 2558017, 2923448, 5116034, 10232068, 20464136]

約数ペア:

[(1, 20464136), (2, 10232068), (4, 5116034), (7, 2923448), (8, 2558017), (11, 1860376), (14, 1461724), (22, 930188), (28, 730862), (44, 465094), (56, 365431), (77, 265768), (88, 232547), (139, 147224), (154, 132884), (239, 85624), (278, 73612), (308, 66442), (478, 42812), (556, 36806), (616, 33221), (956, 21406), (973, 21032), (1112, 18403), (1529, 13384), (1673, 12232), (1912, 10703), (1946, 10516), (2629, 7784), (3058, 6692), (3346, 6116), (3892, 5258)]