21672807

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{337}}^1$

素因数の和:467

約数の個数: 32

約数和(自身を含む): 33388992

約数和(自身を除く): 11716185

約数列:

[1, 3, 13, 17, 39, 51, 97, 221, 291, 337, 663, 1011, 1261, 1649, 3783, 4381, 4947, 5729, 13143, 17187, 21437, 32689, 64311, 74477, 98067, 223431, 424957, 555713, 1274871, 1667139, 7224269, 21672807]

約数ペア:

[(1, 21672807), (3, 7224269), (13, 1667139), (17, 1274871), (39, 555713), (51, 424957), (97, 223431), (221, 98067), (291, 74477), (337, 64311), (663, 32689), (1011, 21437), (1261, 17187), (1649, 13143), (3783, 5729), (4381, 4947)]