18822881

素因数分解:

$7^1\times {\mathrm{11}}^2\times {\mathrm{71}}^1\times {\mathrm{313}}^1$

素因数の和:413

約数の個数: 24

約数和(自身を含む): 24054912

約数和(自身を除く): 5232031

約数列:

[1, 7, 11, 71, 77, 121, 313, 497, 781, 847, 2191, 3443, 5467, 8591, 22223, 24101, 37873, 60137, 155561, 244453, 265111, 1711171, 2688983, 18822881]

約数ペア:

[(1, 18822881), (7, 2688983), (11, 1711171), (71, 265111), (77, 244453), (121, 155561), (313, 60137), (497, 37873), (781, 24101), (847, 22223), (2191, 8591), (3443, 5467)]