20654823

素因数分解:

$3^1\times 7^2\times {\mathrm{71}}^1\times {\mathrm{1979}}^1$

素因数の和:2067

約数の個数: 24

約数和(自身を含む): 32503680

約数和(自身を除く): 11848857

約数列:

[1, 3, 7, 21, 49, 71, 147, 213, 497, 1491, 1979, 3479, 5937, 10437, 13853, 41559, 96971, 140509, 290913, 421527, 983563, 2950689, 6884941, 20654823]

約数ペア:

[(1, 20654823), (3, 6884941), (7, 2950689), (21, 983563), (49, 421527), (71, 290913), (147, 140509), (213, 96971), (497, 41559), (1491, 13853), (1979, 10437), (3479, 5937)]