20651860

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{54347}}^1$

素因数の和:54375

約数の個数: 24

約数和(自身を含む): 45652320

約数和(自身を除く): 25000460

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 54347, 108694, 217388, 271735, 543470, 1032593, 1086940, 2065186, 4130372, 5162965, 10325930, 20651860]

約数ペア:

[(1, 20651860), (2, 10325930), (4, 5162965), (5, 4130372), (10, 2065186), (19, 1086940), (20, 1032593), (38, 543470), (76, 271735), (95, 217388), (190, 108694), (380, 54347)]