19431640

素因数分解:

$2^3\times 5^1\times {\mathrm{457}}^1\times {\mathrm{1063}}^1$

素因数の和:1531

約数の個数: 32

約数和(自身を含む): 43858080

約数和(自身を除く): 24426440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 457, 914, 1063, 1828, 2126, 2285, 3656, 4252, 4570, 5315, 8504, 9140, 10630, 18280, 21260, 42520, 485791, 971582, 1943164, 2428955, 3886328, 4857910, 9715820, 19431640]

約数ペア:

[(1, 19431640), (2, 9715820), (4, 4857910), (5, 3886328), (8, 2428955), (10, 1943164), (20, 971582), (40, 485791), (457, 42520), (914, 21260), (1063, 18280), (1828, 10630), (2126, 9140), (2285, 8504), (3656, 5315), (4252, 4570)]