21779771

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{139}}^1\times {\mathrm{709}}^1$

素因数の和:878

約数の個数: 16

約数和(自身を含む): 25048800

約数和(自身を除く): 3269029

約数列:

[1, 13, 17, 139, 221, 709, 1807, 2363, 9217, 12053, 30719, 98551, 156689, 1281163, 1675367, 21779771]

約数ペア:

[(1, 21779771), (13, 1675367), (17, 1281163), (139, 156689), (221, 98551), (709, 30719), (1807, 12053), (2363, 9217)]