19867504

素因数分解:

$2^4\times {\mathrm{71}}^1\times {\mathrm{17489}}^1$

素因数の和:17568

約数の個数: 20

約数和(自身を含む): 39037680

約数和(自身を除く): 19170176

約数列:

[1, 2, 4, 8, 16, 71, 142, 284, 568, 1136, 17489, 34978, 69956, 139912, 279824, 1241719, 2483438, 4966876, 9933752, 19867504]

約数ペア:

[(1, 19867504), (2, 9933752), (4, 4966876), (8, 2483438), (16, 1241719), (71, 279824), (142, 139912), (284, 69956), (568, 34978), (1136, 17489)]