19904566

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{12743}}^1$

素因数の和:12827

約数の個数: 16

約数和(自身を含む): 33032448

約数和(自身を除く): 13127882

約数列:

[1, 2, 11, 22, 71, 142, 781, 1562, 12743, 25486, 140173, 280346, 904753, 1809506, 9952283, 19904566]

約数ペア:

[(1, 19904566), (2, 9952283), (11, 1809506), (22, 904753), (71, 280346), (142, 140173), (781, 25486), (1562, 12743)]