20578803

素因数分解:

$3^1\times 7^1\times {\mathrm{631}}^1\times {\mathrm{1553}}^1$

素因数の和:2194

約数の個数: 16

約数和(自身を含む): 31428096

約数和(自身を除く): 10849293

約数列:

[1, 3, 7, 21, 631, 1553, 1893, 4417, 4659, 10871, 13251, 32613, 979943, 2939829, 6859601, 20578803]

約数ペア:

[(1, 20578803), (3, 6859601), (7, 2939829), (21, 979943), (631, 32613), (1553, 13251), (1893, 10871), (4417, 4659)]