20812585

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{2549}}^1$

素因数の和:2648

約数の個数: 16

約数和(自身を含む): 26438400

約数和(自身を除く): 5625815

約数列:

[1, 5, 23, 71, 115, 355, 1633, 2549, 8165, 12745, 58627, 180979, 293135, 904895, 4162517, 20812585]

約数ペア:

[(1, 20812585), (5, 4162517), (23, 904895), (71, 293135), (115, 180979), (355, 58627), (1633, 12745), (2549, 8165)]