21324009

素因数分解:

$3^1\times 7^1\times {\mathrm{521}}^1\times {\mathrm{1949}}^1$

素因数の和:2480

約数の個数: 16

約数和(自身を含む): 32572800

約数和(自身を除く): 11248791

約数列:

[1, 3, 7, 21, 521, 1563, 1949, 3647, 5847, 10941, 13643, 40929, 1015429, 3046287, 7108003, 21324009]

約数ペア:

[(1, 21324009), (3, 7108003), (7, 3046287), (21, 1015429), (521, 40929), (1563, 13643), (1949, 10941), (3647, 5847)]