20478441

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{449}}^1\times {\mathrm{661}}^1$

素因数の和:1136

約数の個数: 16

約数和(自身を含む): 28598400

約数和(自身を除く): 8119959

約数列:

[1, 3, 23, 69, 449, 661, 1347, 1983, 10327, 15203, 30981, 45609, 296789, 890367, 6826147, 20478441]

約数ペア:

[(1, 20478441), (3, 6826147), (23, 890367), (69, 296789), (449, 45609), (661, 30981), (1347, 15203), (1983, 10327)]