19967909

素因数分解:

${\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{73}}^1\times {\mathrm{397}}^1$

素因数の和:536

約数の個数: 16

約数和(自身を含む): 22265712

約数和(自身を除く): 2297803

約数列:

[1, 13, 53, 73, 397, 689, 949, 3869, 5161, 21041, 28981, 50297, 273533, 376753, 1535993, 19967909]

約数ペア:

[(1, 19967909), (13, 1535993), (53, 376753), (73, 273533), (397, 50297), (689, 28981), (949, 21041), (3869, 5161)]