129107600

素因数分解:

$2^4\times 5^2\times {\mathrm{322769}}^1$

素因数の和:322787

約数の個数: 30

約数和(自身を含む): 310181970

約数和(自身を除く): 181074370

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 322769, 645538, 1291076, 1613845, 2582152, 3227690, 5164304, 6455380, 8069225, 12910760, 16138450, 25821520, 32276900, 64553800, 129107600]

約数ペア:

[(1, 129107600), (2, 64553800), (4, 32276900), (5, 25821520), (8, 16138450), (10, 12910760), (16, 8069225), (20, 6455380), (25, 5164304), (40, 3227690), (50, 2582152), (80, 1613845), (100, 1291076), (200, 645538), (400, 322769)]