18811639

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{2053}}^1$

素因数の和:2095

約数の個数: 24

約数和(自身を含む): 25288848

約数和(自身を除く): 6477209

約数列:

[1, 7, 11, 17, 49, 77, 119, 187, 539, 833, 1309, 2053, 9163, 14371, 22583, 34901, 100597, 158081, 244307, 383911, 1106567, 1710149, 2687377, 18811639]

約数ペア:

[(1, 18811639), (7, 2687377), (11, 1710149), (17, 1106567), (49, 383911), (77, 244307), (119, 158081), (187, 100597), (539, 34901), (833, 22583), (1309, 14371), (2053, 9163)]