21689151

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{9257}}^1$

素因数の和:9342

約数の個数: 16

約数和(自身を含む): 31995648

約数和(自身を除く): 10306497

約数列:

[1, 3, 11, 33, 71, 213, 781, 2343, 9257, 27771, 101827, 305481, 657247, 1971741, 7229717, 21689151]

約数ペア:

[(1, 21689151), (3, 7229717), (11, 1971741), (33, 657247), (71, 305481), (213, 101827), (781, 27771), (2343, 9257)]