21001707

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{40939}}^1$

素因数の和:40967

約数の個数: 16

約数和(自身を含む): 32752000

約数和(自身を除く): 11750293

約数列:

[1, 3, 9, 19, 27, 57, 171, 513, 40939, 122817, 368451, 777841, 1105353, 2333523, 7000569, 21001707]

約数ペア:

[(1, 21001707), (3, 7000569), (9, 2333523), (19, 1105353), (27, 777841), (57, 368451), (171, 122817), (513, 40939)]