20784882717

素因数分解:

$3^3\times {\mathrm{71}}^1\times {\mathrm{1481}}^1\times {\mathrm{7321}}^1$

素因数の和:8882

約数の個数: 32

約数和(自身を含む): 31251467520

約数和(自身を除く): 10466584803

約数列:

[1, 3, 9, 27, 71, 213, 639, 1481, 1917, 4443, 7321, 13329, 21963, 39987, 65889, 105151, 197667, 315453, 519791, 946359, 1559373, 2839077, 4678119, 10842401, 14034357, 32527203, 97581609, 292744827, 769810471, 2309431413, 6928294239, 20784882717]

約数ペア:

[(1, 20784882717), (3, 6928294239), (9, 2309431413), (27, 769810471), (71, 292744827), (213, 97581609), (639, 32527203), (1481, 14034357), (1917, 10842401), (4443, 4678119), (7321, 2839077), (13329, 1559373), (21963, 946359), (39987, 519791), (65889, 315453), (105151, 197667)]