18785963

素因数分解:

$7^2\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{211}}^1$

素因数の和:327

約数の個数: 24

約数和(自身を含む): 23201280

約数和(自身を除く): 4415317

約数列:

[1, 7, 23, 49, 79, 161, 211, 553, 1127, 1477, 1817, 3871, 4853, 10339, 12719, 16669, 33971, 89033, 116683, 237797, 383387, 816781, 2683709, 18785963]

約数ペア:

[(1, 18785963), (7, 2683709), (23, 816781), (49, 383387), (79, 237797), (161, 116683), (211, 89033), (553, 33971), (1127, 16669), (1477, 12719), (1817, 10339), (3871, 4853)]