20012531

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{107}}^1\times {\mathrm{347}}^1$

素因数の和:479

約数の個数: 24

約数和(自身を含む): 25707456

約数和(自身を除く): 5694925

約数列:

[1, 7, 11, 49, 77, 107, 347, 539, 749, 1177, 2429, 3817, 5243, 8239, 17003, 26719, 37129, 57673, 187033, 259903, 408419, 1819321, 2858933, 20012531]

約数ペア:

[(1, 20012531), (7, 2858933), (11, 1819321), (49, 408419), (77, 259903), (107, 187033), (347, 57673), (539, 37129), (749, 26719), (1177, 17003), (2429, 8239), (3817, 5243)]