128583405

素因数分解:

$3^2\times 5^1\times {\mathrm{137}}^1\times {\mathrm{20857}}^1$

素因数の和:21005

約数の個数: 24

約数和(自身を含む): 224515512

約数和(自身を除く): 95932107

約数列:

[1, 3, 5, 9, 15, 45, 137, 411, 685, 1233, 2055, 6165, 20857, 62571, 104285, 187713, 312855, 938565, 2857409, 8572227, 14287045, 25716681, 42861135, 128583405]

約数ペア:

[(1, 128583405), (3, 42861135), (5, 25716681), (9, 14287045), (15, 8572227), (45, 2857409), (137, 938565), (411, 312855), (685, 187713), (1233, 104285), (2055, 62571), (6165, 20857)]