21715967

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{467}}^1$

素因数の和:567

約数の個数: 24

約数和(自身を含む): 27636336

約数和(自身を除く): 5920369

約数列:

[1, 7, 13, 49, 73, 91, 467, 511, 637, 949, 3269, 3577, 6071, 6643, 22883, 34091, 42497, 46501, 238637, 297479, 443183, 1670459, 3102281, 21715967]

約数ペア:

[(1, 21715967), (7, 3102281), (13, 1670459), (49, 443183), (73, 297479), (91, 238637), (467, 46501), (511, 42497), (637, 34091), (949, 22883), (3269, 6643), (3577, 6071)]