20789728268

素因数分解:

$2^2\times {\mathrm{47}}^1\times {\mathrm{109}}^1\times {\mathrm{439}}^1\times {\mathrm{2311}}^1$

素因数の和:2910

約数の個数: 48

約数和(自身を含む): 37598668800

約数和(自身を除く): 16808940532

約数列:

[1, 2, 4, 47, 94, 109, 188, 218, 436, 439, 878, 1756, 2311, 4622, 5123, 9244, 10246, 20492, 20633, 41266, 47851, 82532, 95702, 108617, 191404, 217234, 251899, 434468, 503798, 1007596, 1014529, 2029058, 2248997, 4058116, 4497994, 8995988, 11839253, 23678506, 47357012, 47682863, 95365726, 110583661, 190731452, 221167322, 442334644, 5197432067, 10394864134, 20789728268]

約数ペア:

[(1, 20789728268), (2, 10394864134), (4, 5197432067), (47, 442334644), (94, 221167322), (109, 190731452), (188, 110583661), (218, 95365726), (436, 47682863), (439, 47357012), (878, 23678506), (1756, 11839253), (2311, 8995988), (4622, 4497994), (5123, 4058116), (9244, 2248997), (10246, 2029058), (20492, 1014529), (20633, 1007596), (41266, 503798), (47851, 434468), (82532, 251899), (95702, 217234), (108617, 191404)]