21780027

素因数分解:

$3^2\times {\mathrm{59}}^1\times {\mathrm{41017}}^1$

素因数の和:41082

約数の個数: 12

約数和(自身を含む): 31994040

約数和(自身を除く): 10214013

約数列:

[1, 3, 9, 59, 177, 531, 41017, 123051, 369153, 2420003, 7260009, 21780027]

約数ペア:

[(1, 21780027), (3, 7260009), (9, 2420003), (59, 369153), (177, 123051), (531, 41017)]