686347870

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{406123}}^1$

素因数の和:406156

約数の個数: 24

約数和(自身を含む): 1337772456

約数和(自身を除く): 651424586

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 169, 338, 845, 1690, 406123, 812246, 2030615, 4061230, 5279599, 10559198, 26397995, 52795990, 68634787, 137269574, 343173935, 686347870]

約数ペア:

[(1, 686347870), (2, 343173935), (5, 137269574), (10, 68634787), (13, 52795990), (26, 26397995), (65, 10559198), (130, 5279599), (169, 4061230), (338, 2030615), (845, 812246), (1690, 406123)]