21564759

素因数分解:

$3^1\times {\mathrm{71}}^1\times {\mathrm{137}}^1\times {\mathrm{739}}^1$

素因数の和:950

約数の個数: 16

約数和(自身を含む): 29410560

約数和(自身を除く): 7845801

約数列:

[1, 3, 71, 137, 213, 411, 739, 2217, 9727, 29181, 52469, 101243, 157407, 303729, 7188253, 21564759]

約数ペア:

[(1, 21564759), (3, 7188253), (71, 303729), (137, 157407), (213, 101243), (411, 52469), (739, 29181), (2217, 9727)]