18669989

素因数分解:

${\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{577}}^1$

素因数の和:740

約数の個数: 16

約数和(自身を含む): 21362880

約数和(自身を除く): 2692891

約数列:

[1, 13, 19, 131, 247, 577, 1703, 2489, 7501, 10963, 32357, 75587, 142519, 982631, 1436153, 18669989]

約数ペア:

[(1, 18669989), (13, 1436153), (19, 982631), (131, 142519), (247, 75587), (577, 32357), (1703, 10963), (2489, 7501)]