19888687

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{11503}}^1$

素因数の和:11542

約数の個数: 16

約数和(自身を含む): 25768960

約数和(自身を除く): 5880273

約数列:

[1, 7, 13, 19, 91, 133, 247, 1729, 11503, 80521, 149539, 218557, 1046773, 1529899, 2841241, 19888687]

約数ペア:

[(1, 19888687), (7, 2841241), (13, 1529899), (19, 1046773), (91, 218557), (133, 149539), (247, 80521), (1729, 11503)]