19887819

素因数分解:

$3^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{7457}}^1$

素因数の和:7594

約数の個数: 16

約数和(自身を含む): 30547968

約数和(自身を除く): 10660149

約数列:

[1, 3, 7, 21, 127, 381, 889, 2667, 7457, 22371, 52199, 156597, 947039, 2841117, 6629273, 19887819]

約数ペア:

[(1, 19887819), (3, 6629273), (7, 2841117), (21, 947039), (127, 156597), (381, 52199), (889, 22371), (2667, 7457)]