21090399

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{33637}}^1$

素因数の和:33670

約数の個数: 16

約数和(自身を含む): 32292480

約数和(自身を除く): 11202081

約数列:

[1, 3, 11, 19, 33, 57, 209, 627, 33637, 100911, 370007, 639103, 1110021, 1917309, 7030133, 21090399]

約数ペア:

[(1, 21090399), (3, 7030133), (11, 1917309), (19, 1110021), (33, 639103), (57, 370007), (209, 100911), (627, 33637)]