18920825

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{9829}}^1$

素因数の和:9857

約数の個数: 24

約数和(自身を含む): 29254080

約数和(自身を除く): 10333255

約数列:

[1, 5, 7, 11, 25, 35, 55, 77, 175, 275, 385, 1925, 9829, 49145, 68803, 108119, 245725, 344015, 540595, 756833, 1720075, 2702975, 3784165, 18920825]

約数ペア:

[(1, 18920825), (5, 3784165), (7, 2702975), (11, 1720075), (25, 756833), (35, 540595), (55, 344015), (77, 245725), (175, 108119), (275, 68803), (385, 49145), (1925, 9829)]