21085899

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{643}}^2$

素因数の和:1306

約数の個数: 12

約数和(自身を含む): 29814696

約数和(自身を除く): 8728797

約数列:

[1, 3, 17, 51, 643, 1929, 10931, 32793, 413449, 1240347, 7028633, 21085899]

約数ペア:

[(1, 21085899), (3, 7028633), (17, 1240347), (51, 413449), (643, 32793), (1929, 10931)]