20339825

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{1999}}^1$

素因数の和:2057

約数の個数: 24

約数和(自身を含む): 28272000

約数和(自身を除く): 7932175

約数列:

[1, 5, 11, 25, 37, 55, 185, 275, 407, 925, 1999, 2035, 9995, 10175, 21989, 49975, 73963, 109945, 369815, 549725, 813593, 1849075, 4067965, 20339825]

約数ペア:

[(1, 20339825), (5, 4067965), (11, 1849075), (25, 813593), (37, 549725), (55, 369815), (185, 109945), (275, 73963), (407, 49975), (925, 21989), (1999, 10175), (2035, 9995)]