20789854850

素因数分解:

$2^1\times 5^2\times {\mathrm{653}}^1\times {\mathrm{636749}}^1$

素因数の和:637414

約数の個数: 24

約数和(自身を含む): 38728408500

約数和(自身を除く): 17938553650

約数列:

[1, 2, 5, 10, 25, 50, 653, 1306, 3265, 6530, 16325, 32650, 636749, 1273498, 3183745, 6367490, 15918725, 31837450, 415797097, 831594194, 2078985485, 4157970970, 10394927425, 20789854850]

約数ペア:

[(1, 20789854850), (2, 10394927425), (5, 4157970970), (10, 2078985485), (25, 831594194), (50, 415797097), (653, 31837450), (1306, 15918725), (3265, 6367490), (6530, 3183745), (16325, 1273498), (32650, 636749)]