20815212

素因数分解:

$2^2\times 3^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{2221}}^1$

素因数の和:2310

約数の個数: 48

約数和(自身を含む): 53754624

約数和(自身を除く): 32939412

約数列:

[1, 2, 3, 4, 6, 11, 12, 22, 33, 44, 66, 71, 132, 142, 213, 284, 426, 781, 852, 1562, 2221, 2343, 3124, 4442, 4686, 6663, 8884, 9372, 13326, 24431, 26652, 48862, 73293, 97724, 146586, 157691, 293172, 315382, 473073, 630764, 946146, 1734601, 1892292, 3469202, 5203803, 6938404, 10407606, 20815212]

約数ペア:

[(1, 20815212), (2, 10407606), (3, 6938404), (4, 5203803), (6, 3469202), (11, 1892292), (12, 1734601), (22, 946146), (33, 630764), (44, 473073), (66, 315382), (71, 293172), (132, 157691), (142, 146586), (213, 97724), (284, 73293), (426, 48862), (781, 26652), (852, 24431), (1562, 13326), (2221, 9372), (2343, 8884), (3124, 6663), (4442, 4686)]