20549221

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{103}}^1\times {\mathrm{2591}}^1$

素因数の和:2712

約数の個数: 16

約数和(自身を含む): 25878528

約数和(自身を除く): 5329307

約数列:

[1, 7, 11, 77, 103, 721, 1133, 2591, 7931, 18137, 28501, 199507, 266873, 1868111, 2935603, 20549221]

約数ペア:

[(1, 20549221), (7, 2935603), (11, 1868111), (77, 266873), (103, 199507), (721, 28501), (1133, 18137), (2591, 7931)]