21564291

素因数分解:

$3^1\times 7^1\times {\mathrm{643}}^1\times {\mathrm{1597}}^1$

素因数の和:2250

約数の個数: 16

約数和(自身を含む): 32931584

約数和(自身を除く): 11367293

約数列:

[1, 3, 7, 21, 643, 1597, 1929, 4501, 4791, 11179, 13503, 33537, 1026871, 3080613, 7188097, 21564291]

約数ペア:

[(1, 21564291), (3, 7188097), (7, 3080613), (21, 1026871), (643, 33537), (1597, 13503), (1929, 11179), (4501, 4791)]