278045271

素因数分解:

$3^3\times 7^1\times {\mathrm{691}}^1\times {\mathrm{2129}}^1$

素因数の和:2836

約数の個数: 32

約数和(自身を含む): 471667200

約数和(自身を除く): 193621929

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 691, 2073, 2129, 4837, 6219, 6387, 14511, 14903, 18657, 19161, 43533, 44709, 57483, 130599, 134127, 402381, 1471139, 4413417, 10297973, 13240251, 30893919, 39720753, 92681757, 278045271]

約数ペア:

[(1, 278045271), (3, 92681757), (7, 39720753), (9, 30893919), (21, 13240251), (27, 10297973), (63, 4413417), (189, 1471139), (691, 402381), (2073, 134127), (2129, 130599), (4837, 57483), (6219, 44709), (6387, 43533), (14511, 19161), (14903, 18657)]