20642775

素因数分解:

$3^1\times 5^2\times {\mathrm{449}}^1\times {\mathrm{613}}^1$

素因数の和:1075

約数の個数: 24

約数和(自身を含む): 34261200

約数和(自身を除く): 13618425

約数列:

[1, 3, 5, 15, 25, 75, 449, 613, 1347, 1839, 2245, 3065, 6735, 9195, 11225, 15325, 33675, 45975, 275237, 825711, 1376185, 4128555, 6880925, 20642775]

約数ペア:

[(1, 20642775), (3, 6880925), (5, 4128555), (15, 1376185), (25, 825711), (75, 275237), (449, 45975), (613, 33675), (1347, 15325), (1839, 11225), (2245, 9195), (3065, 6735)]