20257281

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{2803}}^1$

素因数の和:2893

約数の個数: 24

約数和(自身を含む): 32369376

約数和(自身を除く): 12112095

約数列:

[1, 3, 9, 11, 33, 73, 99, 219, 657, 803, 2409, 2803, 7227, 8409, 25227, 30833, 92499, 204619, 277497, 613857, 1841571, 2250809, 6752427, 20257281]

約数ペア:

[(1, 20257281), (3, 6752427), (9, 2250809), (11, 1841571), (33, 613857), (73, 277497), (99, 204619), (219, 92499), (657, 30833), (803, 25227), (2409, 8409), (2803, 7227)]