21138447

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{181}}^1\times {\mathrm{3539}}^1$

素因数の和:3734

約数の個数: 16

約数和(自身を含む): 30925440

約数和(自身を除く): 9786993

約数列:

[1, 3, 11, 33, 181, 543, 1991, 3539, 5973, 10617, 38929, 116787, 640559, 1921677, 7046149, 21138447]

約数ペア:

[(1, 21138447), (3, 7046149), (11, 1921677), (33, 640559), (181, 116787), (543, 38929), (1991, 10617), (3539, 5973)]