21025767

素因数分解:

$3^1\times 7^1\times {\mathrm{337}}^1\times {\mathrm{2971}}^1$

素因数の和:3318

約数の個数: 16

約数和(自身を含む): 32145152

約数和(自身を除く): 11119385

約数列:

[1, 3, 7, 21, 337, 1011, 2359, 2971, 7077, 8913, 20797, 62391, 1001227, 3003681, 7008589, 21025767]

約数ペア:

[(1, 21025767), (3, 7008589), (7, 3003681), (21, 1001227), (337, 62391), (1011, 20797), (2359, 8913), (2971, 7077)]