25290321

素因数分解:

$3^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{4001}}^1$

素因数の和:4061

約数の個数: 24

約数和(自身を含む): 40148064

約数和(自身を除く): 14857743

約数列:

[1, 3, 7, 21, 43, 49, 129, 147, 301, 903, 2107, 4001, 6321, 12003, 28007, 84021, 172043, 196049, 516129, 588147, 1204301, 3612903, 8430107, 25290321]

約数ペア:

[(1, 25290321), (3, 8430107), (7, 3612903), (21, 1204301), (43, 588147), (49, 516129), (129, 196049), (147, 172043), (301, 84021), (903, 28007), (2107, 12003), (4001, 6321)]