21721189

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{167}}^1\times {\mathrm{1093}}^1$

素因数の和:1284

約数の個数: 16

約数和(自身を含む): 26466048

約数和(自身を除く): 4744859

約数列:

[1, 7, 17, 119, 167, 1093, 1169, 2839, 7651, 18581, 19873, 130067, 182531, 1277717, 3103027, 21721189]

約数ペア:

[(1, 21721189), (7, 3103027), (17, 1277717), (119, 182531), (167, 130067), (1093, 19873), (1169, 18581), (2839, 7651)]