21680638

素因数分解:

$2^1\times 7^2\times {\mathrm{197}}^1\times {\mathrm{1123}}^1$

素因数の和:1336

約数の個数: 24

約数和(自身を含む): 38056392

約数和(自身を除く): 16375754

約数列:

[1, 2, 7, 14, 49, 98, 197, 394, 1123, 1379, 2246, 2758, 7861, 9653, 15722, 19306, 55027, 110054, 221231, 442462, 1548617, 3097234, 10840319, 21680638]

約数ペア:

[(1, 21680638), (2, 10840319), (7, 3097234), (14, 1548617), (49, 442462), (98, 221231), (197, 110054), (394, 55027), (1123, 19306), (1379, 15722), (2246, 9653), (2758, 7861)]