209809640

素因数分解:

$2^3\times 5^1\times {\mathrm{5245241}}^1$

素因数の和:5245252

約数の個数: 16

約数和(自身を含む): 472071780

約数和(自身を除く): 262262140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 5245241, 10490482, 20980964, 26226205, 41961928, 52452410, 104904820, 209809640]

約数ペア:

[(1, 209809640), (2, 104904820), (4, 52452410), (5, 41961928), (8, 26226205), (10, 20980964), (20, 10490482), (40, 5245241)]