19865493

素因数分解:

$3^5\times {\mathrm{29}}^1\times {\mathrm{2819}}^1$

素因数の和:2863

約数の個数: 24

約数和(自身を含む): 30794400

約数和(自身を除く): 10928907

約数列:

[1, 3, 9, 27, 29, 81, 87, 243, 261, 783, 2349, 2819, 7047, 8457, 25371, 76113, 81751, 228339, 245253, 685017, 735759, 2207277, 6621831, 19865493]

約数ペア:

[(1, 19865493), (3, 6621831), (9, 2207277), (27, 735759), (29, 685017), (81, 245253), (87, 228339), (243, 81751), (261, 76113), (783, 25371), (2349, 8457), (2819, 7047)]