2005403841

素因数分解:

$3^2\times 7^2\times {\mathrm{4547401}}^1$

素因数の和:4547421

約数の個数: 18

約数和(自身を含む): 3369624882

約数和(自身を除く): 1364221041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 4547401, 13642203, 31831807, 40926609, 95495421, 222822649, 286486263, 668467947, 2005403841]

約数ペア:

[(1, 2005403841), (3, 668467947), (7, 286486263), (9, 222822649), (21, 95495421), (49, 40926609), (63, 31831807), (147, 13642203), (441, 4547401)]