21000490

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{300007}}^1$

素因数の和:300021

約数の個数: 16

約数和(自身を含む): 43201152

約数和(自身を除く): 22200662

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 300007, 600014, 1500035, 2100049, 3000070, 4200098, 10500245, 21000490]

約数ペア:

[(1, 21000490), (2, 10500245), (5, 4200098), (7, 3000070), (10, 2100049), (14, 1500035), (35, 600014), (70, 300007)]