78390423

素因数分解:

$3^4\times {\mathrm{347}}^1\times {\mathrm{2789}}^1$

素因数の和:3148

約数の個数: 20

約数和(自身を含む): 117481320

約数和(自身を除く): 39090897

約数列:

[1, 3, 9, 27, 81, 347, 1041, 2789, 3123, 8367, 9369, 25101, 28107, 75303, 225909, 967783, 2903349, 8710047, 26130141, 78390423]

約数ペア:

[(1, 78390423), (3, 26130141), (9, 8710047), (27, 2903349), (81, 967783), (347, 225909), (1041, 75303), (2789, 28107), (3123, 25101), (8367, 9369)]