21807814

素因数分解:

$2^1\times 7^1\times {\mathrm{359}}^1\times {\mathrm{4339}}^1$

素因数の和:4707

約数の個数: 16

約数和(自身を含む): 37497600

約数和(自身を除く): 15689786

約数列:

[1, 2, 7, 14, 359, 718, 2513, 4339, 5026, 8678, 30373, 60746, 1557701, 3115402, 10903907, 21807814]

約数ペア:

[(1, 21807814), (2, 10903907), (7, 3115402), (14, 1557701), (359, 60746), (718, 30373), (2513, 8678), (4339, 5026)]