19888449

素因数分解:

$3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{13339}}^1$

素因数の和:13420

約数の個数: 16

約数和(自身を含む): 30735360

約数和(自身を除く): 10846911

約数列:

[1, 3, 7, 21, 71, 213, 497, 1491, 13339, 40017, 93373, 280119, 947069, 2841207, 6629483, 19888449]

約数ペア:

[(1, 19888449), (3, 6629483), (7, 2841207), (21, 947069), (71, 280119), (213, 93373), (497, 40017), (1491, 13339)]