21270327

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{6571}}^1$

素因数の和:6670

約数の個数: 16

約数和(自身を含む): 30914688

約数和(自身を除く): 9644361

約数列:

[1, 3, 13, 39, 83, 249, 1079, 3237, 6571, 19713, 85423, 256269, 545393, 1636179, 7090109, 21270327]

約数ペア:

[(1, 21270327), (3, 7090109), (13, 1636179), (39, 545393), (83, 256269), (249, 85423), (1079, 19713), (3237, 6571)]