21807885

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{132169}}^1$

素因数の和:132188

約数の個数: 16

約数和(自身を含む): 38064960

約数和(自身を除く): 16257075

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 132169, 396507, 660845, 1453859, 1982535, 4361577, 7269295, 21807885]

約数ペア:

[(1, 21807885), (3, 7269295), (5, 4361577), (11, 1982535), (15, 1453859), (33, 660845), (55, 396507), (165, 132169)]