21840555

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{132367}}^1$

素因数の和:132386

約数の個数: 16

約数和(自身を含む): 38121984

約数和(自身を除く): 16281429

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 132367, 397101, 661835, 1456037, 1985505, 4368111, 7280185, 21840555]

約数ペア:

[(1, 21840555), (3, 7280185), (5, 4368111), (11, 1985505), (15, 1456037), (33, 661835), (55, 397101), (165, 132367)]