21090999

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{11177}}^1$

素因数の和:11234

約数の個数: 16

約数和(自身を含む): 30583008

約数和(自身を除く): 9492009

約数列:

[1, 3, 17, 37, 51, 111, 629, 1887, 11177, 33531, 190009, 413549, 570027, 1240647, 7030333, 21090999]

約数ペア:

[(1, 21090999), (3, 7030333), (17, 1240647), (37, 570027), (51, 413549), (111, 190009), (629, 33531), (1887, 11177)]