21181311

素因数分解:

$3^3\times {\mathrm{439}}^1\times {\mathrm{1787}}^1$

素因数の和:2235

約数の個数: 16

約数和(自身を含む): 31468800

約数和(自身を除く): 10287489

約数列:

[1, 3, 9, 27, 439, 1317, 1787, 3951, 5361, 11853, 16083, 48249, 784493, 2353479, 7060437, 21181311]

約数ペア:

[(1, 21181311), (3, 7060437), (9, 2353479), (27, 784493), (439, 48249), (1317, 16083), (1787, 11853), (3951, 5361)]