678762020

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{244159}}^1$

素因数の和:244307

約数の個数: 24

約数和(自身を含む): 1435660800

約数和(自身を除く): 756898780

約数列:

[1, 2, 4, 5, 10, 20, 139, 278, 556, 695, 1390, 2780, 244159, 488318, 976636, 1220795, 2441590, 4883180, 33938101, 67876202, 135752404, 169690505, 339381010, 678762020]

約数ペア:

[(1, 678762020), (2, 339381010), (4, 169690505), (5, 135752404), (10, 67876202), (20, 33938101), (139, 4883180), (278, 2441590), (556, 1220795), (695, 976636), (1390, 488318), (2780, 244159)]