19972513

素因数分解:

${\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{107}}^1\times {\mathrm{239}}^1$

素因数の和:428

約数の個数: 16

約数和(自身を含む): 22394880

約数和(自身を除く): 2422367

約数列:

[1, 11, 71, 107, 239, 781, 1177, 2629, 7597, 16969, 25573, 83567, 186659, 281303, 1815683, 19972513]

約数ペア:

[(1, 19972513), (11, 1815683), (71, 281303), (107, 186659), (239, 83567), (781, 25573), (1177, 16969), (2629, 7597)]