26426780

素因数分解:

$2^2\times 5^1\times {\mathrm{661}}^1\times {\mathrm{1999}}^1$

素因数の和:2669

約数の個数: 24

約数和(自身を含む): 55608000

約数和(自身を除く): 29181220

約数列:

[1, 2, 4, 5, 10, 20, 661, 1322, 1999, 2644, 3305, 3998, 6610, 7996, 9995, 13220, 19990, 39980, 1321339, 2642678, 5285356, 6606695, 13213390, 26426780]

約数ペア:

[(1, 26426780), (2, 13213390), (4, 6606695), (5, 5285356), (10, 2642678), (20, 1321339), (661, 39980), (1322, 19990), (1999, 13220), (2644, 9995), (3305, 7996), (3998, 6610)]