20461777

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{199}}^1\times {\mathrm{397}}^1$

素因数の和:640

約数の個数: 16

約数和(自身を含む): 24198400

約数和(自身を除く): 3736623

約数列:

[1, 7, 37, 199, 259, 397, 1393, 2779, 7363, 14689, 51541, 79003, 102823, 553021, 2923111, 20461777]

約数ペア:

[(1, 20461777), (7, 2923111), (37, 553021), (199, 102823), (259, 79003), (397, 51541), (1393, 14689), (2779, 7363)]