25428403

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{191}}^1$

素因数の和:248

約数の個数: 48

約数和(自身を含む): 36771840

約数和(自身を除く): 11343437

約数列:

[1, 7, 11, 13, 19, 49, 77, 91, 133, 143, 191, 209, 247, 539, 637, 931, 1001, 1337, 1463, 1729, 2101, 2483, 2717, 3629, 7007, 9359, 10241, 12103, 14707, 17381, 19019, 25403, 27313, 39919, 47177, 102949, 121667, 133133, 177821, 191191, 279433, 330239, 518947, 1338337, 1956031, 2311673, 3632629, 25428403]

約数ペア:

[(1, 25428403), (7, 3632629), (11, 2311673), (13, 1956031), (19, 1338337), (49, 518947), (77, 330239), (91, 279433), (133, 191191), (143, 177821), (191, 133133), (209, 121667), (247, 102949), (539, 47177), (637, 39919), (931, 27313), (1001, 25403), (1337, 19019), (1463, 17381), (1729, 14707), (2101, 12103), (2483, 10241), (2717, 9359), (3629, 7007)]