21808903

素因数分解:

${\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{607}}^1$

素因数の和:718

約数の個数: 16

約数和(自身を含む): 24125440

約数和(自身を除く): 2316537

約数列:

[1, 19, 31, 61, 589, 607, 1159, 1891, 11533, 18817, 35929, 37027, 357523, 703513, 1147837, 21808903]

約数ペア:

[(1, 21808903), (19, 1147837), (31, 703513), (61, 357523), (589, 37027), (607, 35929), (1159, 18817), (1891, 11533)]