21239867

素因数分解:

${\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{199}}^1\times {\mathrm{313}}^1$

素因数の和:554

約数の個数: 16

約数和(自身を含む): 24115200

約数和(自身を除く): 2875333

約数列:

[1, 11, 31, 199, 313, 341, 2189, 3443, 6169, 9703, 62287, 67859, 106733, 685157, 1930897, 21239867]

約数ペア:

[(1, 21239867), (11, 1930897), (31, 685157), (199, 106733), (313, 67859), (341, 62287), (2189, 9703), (3443, 6169)]