20986251

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{53}}^1\times {\mathrm{71}}^1$

素因数の和:164

約数の個数: 48

約数和(自身を含む): 34152192

約数和(自身を除く): 13165941

約数列:

[1, 3, 11, 13, 33, 39, 53, 71, 143, 159, 169, 213, 429, 507, 583, 689, 781, 923, 1749, 1859, 2067, 2343, 2769, 3763, 5577, 7579, 8957, 10153, 11289, 11999, 22737, 26871, 30459, 35997, 41393, 48919, 98527, 124179, 131989, 146757, 295581, 395967, 538109, 635947, 1614327, 1907841, 6995417, 20986251]

約数ペア:

[(1, 20986251), (3, 6995417), (11, 1907841), (13, 1614327), (33, 635947), (39, 538109), (53, 395967), (71, 295581), (143, 146757), (159, 131989), (169, 124179), (213, 98527), (429, 48919), (507, 41393), (583, 35997), (689, 30459), (781, 26871), (923, 22737), (1749, 11999), (1859, 11289), (2067, 10153), (2343, 8957), (2769, 7579), (3763, 5577)]