81631277

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{1523}}^1$

素因数の和:1593

約数の個数: 32

約数和(自身を含む): 109240320

約数和(自身を除く): 27609043

約数列:

[1, 7, 13, 19, 31, 91, 133, 217, 247, 403, 589, 1523, 1729, 2821, 4123, 7657, 10661, 19799, 28937, 47213, 53599, 138593, 202559, 330491, 376181, 613769, 897047, 2633267, 4296383, 6279329, 11661611, 81631277]

約数ペア:

[(1, 81631277), (7, 11661611), (13, 6279329), (19, 4296383), (31, 2633267), (91, 897047), (133, 613769), (217, 376181), (247, 330491), (403, 202559), (589, 138593), (1523, 53599), (1729, 47213), (2821, 28937), (4123, 19799), (7657, 10661)]