25991511

素因数分解:

$3^1\times 7^3\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1$

素因数の和:133

約数の個数: 64

約数和(自身を含む): 45696000

約数和(自身を除く): 19704489

約数列:

[1, 3, 7, 13, 21, 29, 39, 49, 67, 87, 91, 147, 201, 203, 273, 343, 377, 469, 609, 637, 871, 1029, 1131, 1407, 1421, 1911, 1943, 2613, 2639, 3283, 4263, 4459, 5829, 6097, 7917, 9849, 9947, 13377, 13601, 18291, 18473, 22981, 25259, 29841, 40803, 42679, 55419, 68943, 75777, 95207, 128037, 129311, 176813, 285621, 298753, 387933, 530439, 666449, 896259, 1237691, 1999347, 3713073, 8663837, 25991511]

約数ペア:

[(1, 25991511), (3, 8663837), (7, 3713073), (13, 1999347), (21, 1237691), (29, 896259), (39, 666449), (49, 530439), (67, 387933), (87, 298753), (91, 285621), (147, 176813), (201, 129311), (203, 128037), (273, 95207), (343, 75777), (377, 68943), (469, 55419), (609, 42679), (637, 40803), (871, 29841), (1029, 25259), (1131, 22981), (1407, 18473), (1421, 18291), (1911, 13601), (1943, 13377), (2613, 9947), (2639, 9849), (3283, 7917), (4263, 6097), (4459, 5829)]