20280687

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{199}}^1\times {\mathrm{211}}^1$

素因数の和:443

約数の個数: 32

約数和(自身を含む): 32563200

約数和(自身を除く): 12282513

約数列:

[1, 3, 7, 21, 23, 69, 161, 199, 211, 483, 597, 633, 1393, 1477, 4179, 4431, 4577, 4853, 13731, 14559, 32039, 33971, 41989, 96117, 101913, 125967, 293923, 881769, 965747, 2897241, 6760229, 20280687]

約数ペア:

[(1, 20280687), (3, 6760229), (7, 2897241), (21, 965747), (23, 881769), (69, 293923), (161, 125967), (199, 101913), (211, 96117), (483, 41989), (597, 33971), (633, 32039), (1393, 14559), (1477, 13731), (4179, 4853), (4431, 4577)]