81557487

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{283}}^1$

素因数の和:412

約数の個数: 48

約数和(自身を含む): 133975296

約数和(自身を除く): 52417809

約数列:

[1, 3, 9, 11, 33, 41, 71, 99, 123, 213, 283, 369, 451, 639, 781, 849, 1353, 2343, 2547, 2911, 3113, 4059, 7029, 8733, 9339, 11603, 20093, 26199, 28017, 32021, 34809, 60279, 96063, 104427, 127633, 180837, 221023, 288189, 382899, 663069, 823813, 1148697, 1989207, 2471439, 7414317, 9061943, 27185829, 81557487]

約数ペア:

[(1, 81557487), (3, 27185829), (9, 9061943), (11, 7414317), (33, 2471439), (41, 1989207), (71, 1148697), (99, 823813), (123, 663069), (213, 382899), (283, 288189), (369, 221023), (451, 180837), (639, 127633), (781, 104427), (849, 96063), (1353, 60279), (2343, 34809), (2547, 32021), (2911, 28017), (3113, 26199), (4059, 20093), (7029, 11603), (8733, 9339)]