20689110178

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{13245269}}^1$

素因数の和:13245353

約数の個数: 16

約数和(自身を含む): 34331739840

約数和(自身を除く): 13642629662

約数列:

[1, 2, 11, 22, 71, 142, 781, 1562, 13245269, 26490538, 145697959, 291395918, 940414099, 1880828198, 10344555089, 20689110178]

約数ペア:

[(1, 20689110178), (2, 10344555089), (11, 1880828198), (22, 940414099), (71, 291395918), (142, 145697959), (781, 26490538), (1562, 13245269)]