21158885

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{311}}^1\times {\mathrm{1237}}^1$

素因数の和:1564

約数の個数: 16

約数和(自身を含む): 27810432

約数和(自身を除く): 6651547

約数列:

[1, 5, 11, 55, 311, 1237, 1555, 3421, 6185, 13607, 17105, 68035, 384707, 1923535, 4231777, 21158885]

約数ペア:

[(1, 21158885), (5, 4231777), (11, 1923535), (55, 384707), (311, 68035), (1237, 17105), (1555, 13607), (3421, 6185)]