21197129187

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{809}}^1\times {\mathrm{671837}}^1$

素因数の和:672662

約数の個数: 16

約数和(自身を含む): 30474571680

約数和(自身を除く): 9277442493

約数列:

[1, 3, 13, 39, 809, 2427, 10517, 31551, 671837, 2015511, 8733881, 26201643, 543516133, 1630548399, 7065709729, 21197129187]

約数ペア:

[(1, 21197129187), (3, 7065709729), (13, 1630548399), (39, 543516133), (809, 26201643), (2427, 8733881), (10517, 2015511), (31551, 671837)]