21089635

素因数分解:

$5^1\times 7^1\times {\mathrm{389}}^1\times {\mathrm{1549}}^1$

素因数の和:1950

約数の個数: 16

約数和(自身を含む): 29016000

約数和(自身を除く): 7926365

約数列:

[1, 5, 7, 35, 389, 1549, 1945, 2723, 7745, 10843, 13615, 54215, 602561, 3012805, 4217927, 21089635]

約数ペア:

[(1, 21089635), (5, 4217927), (7, 3012805), (35, 602561), (389, 54215), (1549, 13615), (1945, 10843), (2723, 7745)]