20388147

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{199}}^1$

素因数の和:323

約数の個数: 32

約数和(自身を含む): 30643200

約数和(自身を除く): 10255053

約数列:

[1, 3, 13, 37, 39, 71, 111, 199, 213, 481, 597, 923, 1443, 2587, 2627, 2769, 7363, 7761, 7881, 14129, 22089, 34151, 42387, 95719, 102453, 183677, 287157, 522773, 551031, 1568319, 6796049, 20388147]

約数ペア:

[(1, 20388147), (3, 6796049), (13, 1568319), (37, 551031), (39, 522773), (71, 287157), (111, 183677), (199, 102453), (213, 95719), (481, 42387), (597, 34151), (923, 22089), (1443, 14129), (2587, 7881), (2627, 7761), (2769, 7363)]