20605791040

素因数分解:

$2^6\times 5^1\times {\mathrm{67}}^1\times {\mathrm{961091}}^1$

素因数の和:961175

約数の個数: 56

約数和(自身を含む): 49799943072

約数和(自身を除く): 29194152032

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 67, 80, 134, 160, 268, 320, 335, 536, 670, 1072, 1340, 2144, 2680, 4288, 5360, 10720, 21440, 961091, 1922182, 3844364, 4805455, 7688728, 9610910, 15377456, 19221820, 30754912, 38443640, 61509824, 64393097, 76887280, 128786194, 153774560, 257572388, 307549120, 321965485, 515144776, 643930970, 1030289552, 1287861940, 2060579104, 2575723880, 4121158208, 5151447760, 10302895520, 20605791040]

約数ペア:

[(1, 20605791040), (2, 10302895520), (4, 5151447760), (5, 4121158208), (8, 2575723880), (10, 2060579104), (16, 1287861940), (20, 1030289552), (32, 643930970), (40, 515144776), (64, 321965485), (67, 307549120), (80, 257572388), (134, 153774560), (160, 128786194), (268, 76887280), (320, 64393097), (335, 61509824), (536, 38443640), (670, 30754912), (1072, 19221820), (1340, 15377456), (2144, 9610910), (2680, 7688728), (4288, 4805455), (5360, 3844364), (10720, 1922182), (21440, 961091)]