18868577

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1559}}^1$

素因数の和:1605

約数の個数: 24

約数和(自身を含む): 24897600

約数和(自身を除く): 6029023

約数列:

[1, 7, 13, 19, 49, 91, 133, 247, 637, 931, 1559, 1729, 10913, 12103, 20267, 29621, 76391, 141869, 207347, 385073, 993083, 1451429, 2695511, 18868577]

約数ペア:

[(1, 18868577), (7, 2695511), (13, 1451429), (19, 993083), (49, 385073), (91, 207347), (133, 141869), (247, 76391), (637, 29621), (931, 20267), (1559, 12103), (1729, 10913)]