28378581

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{2857}}^1$

素因数の和:2921

約数の個数: 32

約数和(自身を含む): 48288768

約数和(自身を除く): 19910187

約数列:

[1, 3, 7, 11, 21, 33, 43, 77, 129, 231, 301, 473, 903, 1419, 2857, 3311, 8571, 9933, 19999, 31427, 59997, 94281, 122851, 219989, 368553, 659967, 859957, 1351361, 2579871, 4054083, 9459527, 28378581]

約数ペア:

[(1, 28378581), (3, 9459527), (7, 4054083), (11, 2579871), (21, 1351361), (33, 859957), (43, 659967), (77, 368553), (129, 219989), (231, 122851), (301, 94281), (473, 59997), (903, 31427), (1419, 19999), (2857, 9933), (3311, 8571)]