19981369

素因数分解:

${\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{661}}^1$

素因数の和:760

約数の個数: 16

約数和(自身を含む): 22137280

約数和(自身を除く): 2155911

約数列:

[1, 19, 37, 43, 661, 703, 817, 1591, 12559, 24457, 28423, 30229, 464683, 540037, 1051651, 19981369]

約数ペア:

[(1, 19981369), (19, 1051651), (37, 540037), (43, 464683), (661, 30229), (703, 28423), (817, 24457), (1591, 12559)]