128750120

素因数分解:

$2^3\times 5^1\times {\mathrm{823}}^1\times {\mathrm{3911}}^1$

素因数の和:4745

約数の個数: 32

約数和(自身を含む): 290113920

約数和(自身を除く): 161363800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 823, 1646, 3292, 3911, 4115, 6584, 7822, 8230, 15644, 16460, 19555, 31288, 32920, 39110, 78220, 156440, 3218753, 6437506, 12875012, 16093765, 25750024, 32187530, 64375060, 128750120]

約数ペア:

[(1, 128750120), (2, 64375060), (4, 32187530), (5, 25750024), (8, 16093765), (10, 12875012), (20, 6437506), (40, 3218753), (823, 156440), (1646, 78220), (3292, 39110), (3911, 32920), (4115, 31288), (6584, 19555), (7822, 16460), (8230, 15644)]