19990424

素因数分解:

$2^3\times {\mathrm{139}}^1\times {\mathrm{17977}}^1$

素因数の和:18122

約数の個数: 16

約数和(自身を含む): 37753800

約数和(自身を除く): 17763376

約数列:

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

約数ペア:

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