21021819

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{77003}}^1$

素因数の和:77026

約数の個数: 16

約数和(自身を含む): 34497792

約数和(自身を除く): 13475973

約数列:

[1, 3, 7, 13, 21, 39, 91, 273, 77003, 231009, 539021, 1001039, 1617063, 3003117, 7007273, 21021819]

約数ペア:

[(1, 21021819), (3, 7007273), (7, 3003117), (13, 1617063), (21, 1001039), (39, 539021), (91, 231009), (273, 77003)]