21381234

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{11839}}^1$

素因数の和:11894

約数の個数: 32

約数和(自身を含む): 50012160

約数和(自身を除く): 28630926

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 43, 86, 129, 258, 301, 602, 903, 1806, 11839, 23678, 35517, 71034, 82873, 165746, 248619, 497238, 509077, 1018154, 1527231, 3054462, 3563539, 7127078, 10690617, 21381234]

約数ペア:

[(1, 21381234), (2, 10690617), (3, 7127078), (6, 3563539), (7, 3054462), (14, 1527231), (21, 1018154), (42, 509077), (43, 497238), (86, 248619), (129, 165746), (258, 82873), (301, 71034), (602, 35517), (903, 23678), (1806, 11839)]