21260259

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{41443}}^1$

素因数の和:41471

約数の個数: 16

約数和(自身を含む): 33155200

約数和(自身を除く): 11894941

約数列:

[1, 3, 9, 19, 27, 57, 171, 513, 41443, 124329, 372987, 787417, 1118961, 2362251, 7086753, 21260259]

約数ペア:

[(1, 21260259), (3, 7086753), (9, 2362251), (19, 1118961), (27, 787417), (57, 372987), (171, 124329), (513, 41443)]