81665857

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{317}}^1$

素因数の和:505

約数の個数: 32

約数和(自身を含む): 106848000

約数和(自身を除く): 25182143

約数列:

[1, 7, 13, 19, 91, 133, 149, 247, 317, 1043, 1729, 1937, 2219, 2831, 4121, 6023, 13559, 19817, 28847, 36803, 42161, 47233, 78299, 257621, 330631, 548093, 614029, 897427, 4298203, 6281989, 11666551, 81665857]

約数ペア:

[(1, 81665857), (7, 11666551), (13, 6281989), (19, 4298203), (91, 897427), (133, 614029), (149, 548093), (247, 330631), (317, 257621), (1043, 78299), (1729, 47233), (1937, 42161), (2219, 36803), (2831, 28847), (4121, 19817), (6023, 13559)]