128538100

素因数分解:

$2^2\times 5^2\times {\mathrm{1285381}}^1$

素因数の和:1285395

約数の個数: 18

約数和(自身を含む): 278927894

約数和(自身を除く): 150389794

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 1285381, 2570762, 5141524, 6426905, 12853810, 25707620, 32134525, 64269050, 128538100]

約数ペア:

[(1, 128538100), (2, 64269050), (4, 32134525), (5, 25707620), (10, 12853810), (20, 6426905), (25, 5141524), (50, 2570762), (100, 1285381)]