21819753

素因数分解:

$3^3\times {\mathrm{31}}^1\times {\mathrm{131}}^1\times {\mathrm{199}}^1$

素因数の和:370

約数の個数: 32

約数和(自身を含む): 33792000

約数和(自身を除く): 11972247

約数列:

[1, 3, 9, 27, 31, 93, 131, 199, 279, 393, 597, 837, 1179, 1791, 3537, 4061, 5373, 6169, 12183, 18507, 26069, 36549, 55521, 78207, 109647, 166563, 234621, 703863, 808139, 2424417, 7273251, 21819753]

約数ペア:

[(1, 21819753), (3, 7273251), (9, 2424417), (27, 808139), (31, 703863), (93, 234621), (131, 166563), (199, 109647), (279, 78207), (393, 55521), (597, 36549), (837, 26069), (1179, 18507), (1791, 12183), (3537, 6169), (4061, 5373)]