19658639

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{479}}^1$

素因数の和:551

約数の個数: 32

約数和(自身を含む): 27095040

約数和(自身を除く): 7436401

約数列:

[1, 7, 11, 13, 41, 77, 91, 143, 287, 451, 479, 533, 1001, 3157, 3353, 3731, 5269, 5863, 6227, 19639, 36883, 41041, 43589, 68497, 137473, 216029, 255307, 479479, 1512203, 1787149, 2808377, 19658639]

約数ペア:

[(1, 19658639), (7, 2808377), (11, 1787149), (13, 1512203), (41, 479479), (77, 255307), (91, 216029), (143, 137473), (287, 68497), (451, 43589), (479, 41041), (533, 36883), (1001, 19639), (3157, 6227), (3353, 5863), (3731, 5269)]