21807153

素因数分解:

$3^2\times {\mathrm{71}}^1\times {\mathrm{34127}}^1$

素因数の和:34204

約数の個数: 12

約数和(自身を含む): 31943808

約数和(自身を除く): 10136655

約数列:

[1, 3, 9, 71, 213, 639, 34127, 102381, 307143, 2423017, 7269051, 21807153]

約数ペア:

[(1, 21807153), (3, 7269051), (9, 2423017), (71, 307143), (213, 102381), (639, 34127)]