20209791

素因数分解:

$3^1\times 7^1\times {\mathrm{211}}^1\times {\mathrm{4561}}^1$

素因数の和:4782

約数の個数: 16

約数和(自身を含む): 30948608

約数和(自身を除く): 10738817

約数列:

[1, 3, 7, 21, 211, 633, 1477, 4431, 4561, 13683, 31927, 95781, 962371, 2887113, 6736597, 20209791]

約数ペア:

[(1, 20209791), (3, 6736597), (7, 2887113), (21, 962371), (211, 95781), (633, 31927), (1477, 13683), (4431, 4561)]