21128283

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{1031}}^1$

素因数の和:1077

約数の個数: 40

約数和(自身を含む): 35963136

約数和(自身を除く): 14834853

約数列:

[1, 3, 9, 11, 23, 27, 33, 69, 81, 99, 207, 253, 297, 621, 759, 891, 1031, 1863, 2277, 3093, 6831, 9279, 11341, 20493, 23713, 27837, 34023, 71139, 83511, 102069, 213417, 260843, 306207, 640251, 782529, 918621, 1920753, 2347587, 7042761, 21128283]

約数ペア:

[(1, 21128283), (3, 7042761), (9, 2347587), (11, 1920753), (23, 918621), (27, 782529), (33, 640251), (69, 306207), (81, 260843), (99, 213417), (207, 102069), (253, 83511), (297, 71139), (621, 34023), (759, 27837), (891, 23713), (1031, 20493), (1863, 11341), (2277, 9279), (3093, 6831)]