21919919

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{167}}^1\times {\mathrm{1103}}^1$

素因数の和:1294

約数の個数: 16

約数和(自身を含む): 26707968

約数和(自身を除く): 4788049

約数列:

[1, 7, 17, 119, 167, 1103, 1169, 2839, 7721, 18751, 19873, 131257, 184201, 1289407, 3131417, 21919919]

約数ペア:

[(1, 21919919), (7, 3131417), (17, 1289407), (119, 184201), (167, 131257), (1103, 19873), (1169, 18751), (2839, 7721)]