20051555

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{2543}}^1$

素因数の和:2650

約数の個数: 16

約数和(自身を含む): 25643520

約数和(自身を除く): 5591965

約数列:

[1, 5, 19, 83, 95, 415, 1577, 2543, 7885, 12715, 48317, 211069, 241585, 1055345, 4010311, 20051555]

約数ペア:

[(1, 20051555), (5, 4010311), (19, 1055345), (83, 241585), (95, 211069), (415, 48317), (1577, 12715), (2543, 7885)]