20866941

素因数分解:

$3^2\times {\mathrm{61}}^1\times {\mathrm{191}}^1\times {\mathrm{199}}^1$

素因数の和:457

約数の個数: 24

約数和(自身を含む): 30950400

約数和(自身を除く): 10083459

約数列:

[1, 3, 9, 61, 183, 191, 199, 549, 573, 597, 1719, 1791, 11651, 12139, 34953, 36417, 38009, 104859, 109251, 114027, 342081, 2318549, 6955647, 20866941]

約数ペア:

[(1, 20866941), (3, 6955647), (9, 2318549), (61, 342081), (183, 114027), (191, 109251), (199, 104859), (549, 38009), (573, 36417), (597, 34953), (1719, 12139), (1791, 11651)]