81290781

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{761}}^1$

素因数の和:874

約数の個数: 48

約数和(自身を含む): 139793472

約数和(自身を除く): 58502691

約数列:

[1, 3, 9, 11, 13, 33, 39, 83, 99, 117, 143, 249, 429, 747, 761, 913, 1079, 1287, 2283, 2739, 3237, 6849, 8217, 8371, 9711, 9893, 11869, 25113, 29679, 35607, 63163, 75339, 89037, 106821, 108823, 189489, 326469, 568467, 694793, 821119, 979407, 2084379, 2463357, 6253137, 7390071, 9032309, 27096927, 81290781]

約数ペア:

[(1, 81290781), (3, 27096927), (9, 9032309), (11, 7390071), (13, 6253137), (33, 2463357), (39, 2084379), (83, 979407), (99, 821119), (117, 694793), (143, 568467), (249, 326469), (429, 189489), (747, 108823), (761, 106821), (913, 89037), (1079, 75339), (1287, 63163), (2283, 35607), (2739, 29679), (3237, 25113), (6849, 11869), (8217, 9893), (8371, 9711)]