138909080

素因数分解:

$2^3\times 5^1\times {\mathrm{1607}}^1\times {\mathrm{2161}}^1$

素因数の和:3779

約数の個数: 32

約数和(自身を含む): 312884640

約数和(自身を除く): 173975560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1607, 2161, 3214, 4322, 6428, 8035, 8644, 10805, 12856, 16070, 17288, 21610, 32140, 43220, 64280, 86440, 3472727, 6945454, 13890908, 17363635, 27781816, 34727270, 69454540, 138909080]

約数ペア:

[(1, 138909080), (2, 69454540), (4, 34727270), (5, 27781816), (8, 17363635), (10, 13890908), (20, 6945454), (40, 3472727), (1607, 86440), (2161, 64280), (3214, 43220), (4322, 32140), (6428, 21610), (8035, 17288), (8644, 16070), (10805, 12856)]