39980848

素因数分解:

$2^4\times {\mathrm{139}}^1\times {\mathrm{17977}}^1$

素因数の和:18124

約数の個数: 20

約数和(自身を含む): 78024520

約数和(自身を除く): 38043672

約数列:

[1, 2, 4, 8, 16, 139, 278, 556, 1112, 2224, 17977, 35954, 71908, 143816, 287632, 2498803, 4997606, 9995212, 19990424, 39980848]

約数ペア:

[(1, 39980848), (2, 19990424), (4, 9995212), (8, 4997606), (16, 2498803), (139, 287632), (278, 143816), (556, 71908), (1112, 35954), (2224, 17977)]