19287994

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{20389}}^1$

素因数の和:20445

約数の個数: 16

約数和(自身を含む): 32297760

約数和(自身を除く): 13009766

約数列:

[1, 2, 11, 22, 43, 86, 473, 946, 20389, 40778, 224279, 448558, 876727, 1753454, 9643997, 19287994]

約数ペア:

[(1, 19287994), (2, 9643997), (11, 1753454), (22, 876727), (43, 448558), (86, 224279), (473, 40778), (946, 20389)]