18901894

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{37}}^1\times {\mathrm{2111}}^1$

素因数の和:2172

約数の個数: 24

約数和(自身を含む): 32022144

約数和(自身を除く): 13120250

約数列:

[1, 2, 11, 22, 37, 74, 121, 242, 407, 814, 2111, 4222, 4477, 8954, 23221, 46442, 78107, 156214, 255431, 510862, 859177, 1718354, 9450947, 18901894]

約数ペア:

[(1, 18901894), (2, 9450947), (11, 1718354), (22, 859177), (37, 510862), (74, 255431), (121, 156214), (242, 78107), (407, 46442), (814, 23221), (2111, 8954), (4222, 4477)]