28750707

素因数分解:

$3^4\times {\mathrm{79}}^1\times {\mathrm{4493}}^1$

素因数の和:4584

約数の個数: 20

約数和(自身を含む): 43501920

約数和(自身を除く): 14751213

約数列:

[1, 3, 9, 27, 79, 81, 237, 711, 2133, 4493, 6399, 13479, 40437, 121311, 354947, 363933, 1064841, 3194523, 9583569, 28750707]

約数ペア:

[(1, 28750707), (3, 9583569), (9, 3194523), (27, 1064841), (79, 363933), (81, 354947), (237, 121311), (711, 40437), (2133, 13479), (4493, 6399)]