19908668

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{3947}}^1$

素因数の和:4061

約数の個数: 24

約数和(自身を含む): 37916592

約数和(自身を除く): 18007924

約数列:

[1, 2, 4, 13, 26, 52, 97, 194, 388, 1261, 2522, 3947, 5044, 7894, 15788, 51311, 102622, 205244, 382859, 765718, 1531436, 4977167, 9954334, 19908668]

約数ペア:

[(1, 19908668), (2, 9954334), (4, 4977167), (13, 1531436), (26, 765718), (52, 382859), (97, 205244), (194, 102622), (388, 51311), (1261, 15788), (2522, 7894), (3947, 5044)]