20531810

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{12149}}^1$

素因数の和:12182

約数の個数: 24

約数和(自身を含む): 40022100

約数和(自身を除く): 19490290

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 169, 338, 845, 1690, 12149, 24298, 60745, 121490, 157937, 315874, 789685, 1579370, 2053181, 4106362, 10265905, 20531810]

約数ペア:

[(1, 20531810), (2, 10265905), (5, 4106362), (10, 2053181), (13, 1579370), (26, 789685), (65, 315874), (130, 157937), (169, 121490), (338, 60745), (845, 24298), (1690, 12149)]