20518897

素因数分解:

$7^2\times {\mathrm{53}}^1\times {\mathrm{7901}}^1$

素因数の和:7968

約数の個数: 12

約数和(自身を含む): 24322356

約数和(自身を除く): 3803459

約数列:

[1, 7, 49, 53, 371, 2597, 7901, 55307, 387149, 418753, 2931271, 20518897]

約数ペア:

[(1, 20518897), (7, 2931271), (49, 418753), (53, 387149), (371, 55307), (2597, 7901)]