21181426

素因数分解:

$2^1\times 7^2\times {\mathrm{29}}^2\times {\mathrm{257}}^1$

素因数の和:331

約数の個数: 36

約数和(自身を含む): 38426778

約数和(自身を除く): 17245352

約数列:

[1, 2, 7, 14, 29, 49, 58, 98, 203, 257, 406, 514, 841, 1421, 1682, 1799, 2842, 3598, 5887, 7453, 11774, 12593, 14906, 25186, 41209, 52171, 82418, 104342, 216137, 365197, 432274, 730394, 1512959, 3025918, 10590713, 21181426]

約数ペア:

[(1, 21181426), (2, 10590713), (7, 3025918), (14, 1512959), (29, 730394), (49, 432274), (58, 365197), (98, 216137), (203, 104342), (257, 82418), (406, 52171), (514, 41209), (841, 25186), (1421, 14906), (1682, 12593), (1799, 11774), (2842, 7453), (3598, 5887)]