221496457

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{78517}}^1$

素因数の和:78568

約数の個数: 16

約数和(自身を含む): 281408512

約数和(自身を除く): 59912055

約数列:

[1, 7, 13, 31, 91, 217, 403, 2821, 78517, 549619, 1020721, 2434027, 7145047, 17038189, 31642351, 221496457]

約数ペア:

[(1, 221496457), (7, 31642351), (13, 17038189), (31, 7145047), (91, 2434027), (217, 1020721), (403, 549619), (2821, 78517)]