19109721

素因数分解:

$3^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1\times {\mathrm{1229}}^1$

素因数の和:1376

約数の個数: 16

約数和(自身を含む): 26213760

約数和(自身を除く): 7104039

約数列:

[1, 3, 71, 73, 213, 219, 1229, 3687, 5183, 15549, 87259, 89717, 261777, 269151, 6369907, 19109721]

約数ペア:

[(1, 19109721), (3, 6369907), (71, 269151), (73, 261777), (213, 89717), (219, 87259), (1229, 15549), (3687, 5183)]