20857972

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{127}}^1\times {\mathrm{2161}}^1$

素因数の和:2311

約数の個数: 24

約数和(自身を含む): 38743040

約数和(自身を除く): 17885068

約数列:

[1, 2, 4, 19, 38, 76, 127, 254, 508, 2161, 2413, 4322, 4826, 8644, 9652, 41059, 82118, 164236, 274447, 548894, 1097788, 5214493, 10428986, 20857972]

約数ペア:

[(1, 20857972), (2, 10428986), (4, 5214493), (19, 1097788), (38, 548894), (76, 274447), (127, 164236), (254, 82118), (508, 41059), (2161, 9652), (2413, 8644), (4322, 4826)]