21012411

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{27043}}^1$

素因数の和:27090

約数の個数: 16

約数和(自身を含む): 32885504

約数和(自身を除く): 11873093

約数列:

[1, 3, 7, 21, 37, 111, 259, 777, 27043, 81129, 189301, 567903, 1000591, 3001773, 7004137, 21012411]

約数ペア:

[(1, 21012411), (3, 7004137), (7, 3001773), (21, 1000591), (37, 567903), (111, 189301), (259, 81129), (777, 27043)]