278804953

素因数分解:

$7^2\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{2521}}^1$

素因数の和:2633

約数の個数: 24

約数和(自身を含む): 338684424

約数和(自身を除く): 59879471

約数列:

[1, 7, 37, 49, 61, 259, 427, 1813, 2257, 2521, 2989, 15799, 17647, 93277, 110593, 123529, 153781, 652939, 1076467, 4570573, 5689897, 7535269, 39829279, 278804953]

約数ペア:

[(1, 278804953), (7, 39829279), (37, 7535269), (49, 5689897), (61, 4570573), (259, 1076467), (427, 652939), (1813, 153781), (2257, 123529), (2521, 110593), (2989, 93277), (15799, 17647)]