798840400

素因数分解:

$2^4\times 5^2\times {\mathrm{1997101}}^1$

素因数の和:1997119

約数の個数: 30

約数和(自身を含む): 1919215022

約数和(自身を除く): 1120374622

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 1997101, 3994202, 7988404, 9985505, 15976808, 19971010, 31953616, 39942020, 49927525, 79884040, 99855050, 159768080, 199710100, 399420200, 798840400]

約数ペア:

[(1, 798840400), (2, 399420200), (4, 199710100), (5, 159768080), (8, 99855050), (10, 79884040), (16, 49927525), (20, 39942020), (25, 31953616), (40, 19971010), (50, 15976808), (80, 9985505), (100, 7988404), (200, 3994202), (400, 1997101)]