18936407

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{173}}^1\times {\mathrm{823}}^1$

素因数の和:1022

約数の個数: 16

約数和(自身を含む): 22940160

約数和(自身を除く): 4003753

約数列:

[1, 7, 19, 133, 173, 823, 1211, 3287, 5761, 15637, 23009, 109459, 142379, 996653, 2705201, 18936407]

約数ペア:

[(1, 18936407), (7, 2705201), (19, 996653), (133, 142379), (173, 109459), (823, 23009), (1211, 15637), (3287, 5761)]