19994555

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{281}}^1$

素因数の和:419

約数の個数: 32

約数和(自身を含む): 29237760

約数和(自身を除く): 9243205

約数列:

[1, 5, 7, 19, 35, 95, 107, 133, 281, 535, 665, 749, 1405, 1967, 2033, 3745, 5339, 9835, 10165, 14231, 26695, 30067, 37373, 71155, 150335, 186865, 210469, 571273, 1052345, 2856365, 3998911, 19994555]

約数ペア:

[(1, 19994555), (5, 3998911), (7, 2856365), (19, 1052345), (35, 571273), (95, 210469), (107, 186865), (133, 150335), (281, 71155), (535, 37373), (665, 30067), (749, 26695), (1405, 14231), (1967, 10165), (2033, 9835), (3745, 5339)]