210678025

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{495713}}^1$

素因数の和:495740

約数の個数: 12

約数和(自身を含む): 276608412

約数和(自身を除く): 65930387

約数列:

[1, 5, 17, 25, 85, 425, 495713, 2478565, 8427121, 12392825, 42135605, 210678025]

約数ペア:

[(1, 210678025), (5, 42135605), (17, 12392825), (25, 8427121), (85, 2478565), (425, 495713)]