25139907

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{263}}^1$

素因数の和:344

約数の個数: 48

約数和(自身を含む): 42282240

約数和(自身を除く): 17142333

約数列:

[1, 3, 9, 13, 19, 39, 43, 57, 117, 129, 171, 247, 263, 387, 559, 741, 789, 817, 1677, 2223, 2367, 2451, 3419, 4997, 5031, 7353, 10257, 10621, 11309, 14991, 30771, 31863, 33927, 44973, 64961, 95589, 101781, 147017, 194883, 214871, 441051, 584649, 644613, 1323153, 1933839, 2793323, 8379969, 25139907]

約数ペア:

[(1, 25139907), (3, 8379969), (9, 2793323), (13, 1933839), (19, 1323153), (39, 644613), (43, 584649), (57, 441051), (117, 214871), (129, 194883), (171, 147017), (247, 101781), (263, 95589), (387, 64961), (559, 44973), (741, 33927), (789, 31863), (817, 30771), (1677, 14991), (2223, 11309), (2367, 10621), (2451, 10257), (3419, 7353), (4997, 5031)]