19802019988

素因数分解:

$2^2\times {\mathrm{2251}}^1\times {\mathrm{2199247}}^1$

素因数の和:2201502

約数の個数: 12

約数和(自身を含む): 34668945472

約数和(自身を除く): 14866925484

約数列:

[1, 2, 4, 2251, 4502, 9004, 2199247, 4398494, 8796988, 4950504997, 9901009994, 19802019988]

約数ペア:

[(1, 19802019988), (2, 9901009994), (4, 4950504997), (2251, 8796988), (4502, 4398494), (9004, 2199247)]