19489756

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{2621}}^1$

素因数の和:2662

約数の個数: 36

約数和(自身を含む): 40305384

約数和(自身を除く): 20815628

約数列:

[1, 2, 4, 11, 13, 22, 26, 44, 52, 143, 169, 286, 338, 572, 676, 1859, 2621, 3718, 5242, 7436, 10484, 28831, 34073, 57662, 68146, 115324, 136292, 374803, 442949, 749606, 885898, 1499212, 1771796, 4872439, 9744878, 19489756]

約数ペア:

[(1, 19489756), (2, 9744878), (4, 4872439), (11, 1771796), (13, 1499212), (22, 885898), (26, 749606), (44, 442949), (52, 374803), (143, 136292), (169, 115324), (286, 68146), (338, 57662), (572, 34073), (676, 28831), (1859, 10484), (2621, 7436), (3718, 5242)]