128512900

素因数分解:

$2^2\times 5^2\times {\mathrm{1285129}}^1$

素因数の和:1285143

約数の個数: 18

約数和(自身を含む): 278873210

約数和(自身を除く): 150360310

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 1285129, 2570258, 5140516, 6425645, 12851290, 25702580, 32128225, 64256450, 128512900]

約数ペア:

[(1, 128512900), (2, 64256450), (4, 32128225), (5, 25702580), (10, 12851290), (20, 6425645), (25, 5140516), (50, 2570258), (100, 1285129)]