1520291187

素因数分解:

$3^4\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{251}}^1$

素因数の和:390

約数の個数: 80

約数和(自身を含む): 2447165952

約数和(自身を除く): 926874765

約数列:

[1, 3, 9, 27, 37, 43, 47, 81, 111, 129, 141, 251, 333, 387, 423, 753, 999, 1161, 1269, 1591, 1739, 2021, 2259, 2997, 3483, 3807, 4773, 5217, 6063, 6777, 9287, 10793, 11797, 14319, 15651, 18189, 20331, 27861, 32379, 35391, 42957, 46953, 54567, 74777, 83583, 97137, 106173, 128871, 140859, 163701, 224331, 250749, 291411, 318519, 399341, 436489, 507271, 672993, 752247, 874233, 955557, 1198023, 1309467, 1521813, 2018979, 3594069, 3928401, 4565439, 6056937, 10782207, 11785203, 13696317, 18769027, 32346621, 35355609, 41088951, 56307081, 168921243, 506763729, 1520291187]

約数ペア:

[(1, 1520291187), (3, 506763729), (9, 168921243), (27, 56307081), (37, 41088951), (43, 35355609), (47, 32346621), (81, 18769027), (111, 13696317), (129, 11785203), (141, 10782207), (251, 6056937), (333, 4565439), (387, 3928401), (423, 3594069), (753, 2018979), (999, 1521813), (1161, 1309467), (1269, 1198023), (1591, 955557), (1739, 874233), (2021, 752247), (2259, 672993), (2997, 507271), (3483, 436489), (3807, 399341), (4773, 318519), (5217, 291411), (6063, 250749), (6777, 224331), (9287, 163701), (10793, 140859), (11797, 128871), (14319, 106173), (15651, 97137), (18189, 83583), (20331, 74777), (27861, 54567), (32379, 46953), (35391, 42957)]