20339823

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{2683}}^1$

素因数の和:2731

約数の個数: 24

約数和(自身を含む): 32723328

約数和(自身を除く): 12383505

約数列:

[1, 3, 7, 19, 21, 57, 133, 361, 399, 1083, 2527, 2683, 7581, 8049, 18781, 50977, 56343, 152931, 356839, 968563, 1070517, 2905689, 6779941, 20339823]

約数ペア:

[(1, 20339823), (3, 6779941), (7, 2905689), (19, 1070517), (21, 968563), (57, 356839), (133, 152931), (361, 56343), (399, 50977), (1083, 18781), (2527, 8049), (2683, 7581)]