19900996871

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{1730371}}^1$

素因数の和:1730462

約数の個数: 16

約数和(自身を含む): 23920662528

約数和(自身を除く): 4019665657

約数列:

[1, 7, 31, 53, 217, 371, 1643, 11501, 1730371, 12112597, 53641501, 91709663, 375490507, 641967641, 2842999553, 19900996871]

約数ペア:

[(1, 19900996871), (7, 2842999553), (31, 641967641), (53, 375490507), (217, 91709663), (371, 53641501), (1643, 12112597), (11501, 1730371)]