2005821

素因数分解:

$3^2\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1$

素因数の和:193

約数の個数: 24

約数和(自身を含む): 3047616

約数和(自身を除く): 1041795

約数列:

[1, 3, 9, 43, 71, 73, 129, 213, 219, 387, 639, 657, 3053, 3139, 5183, 9159, 9417, 15549, 27477, 28251, 46647, 222869, 668607, 2005821]

約数ペア:

[(1, 2005821), (3, 668607), (9, 222869), (43, 46647), (71, 28251), (73, 27477), (129, 15549), (213, 9417), (219, 9159), (387, 5183), (639, 3139), (657, 3053)]