81471069

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{109}}^1$

素因数の和:215

約数の個数: 64

約数和(自身を含む): 135168000

約数和(自身を除く): 53696931

約数列:

[1, 3, 9, 19, 27, 31, 47, 57, 93, 109, 141, 171, 279, 327, 423, 513, 589, 837, 893, 981, 1269, 1457, 1767, 2071, 2679, 2943, 3379, 4371, 5123, 5301, 6213, 8037, 10137, 13113, 15369, 15903, 18639, 24111, 27683, 30411, 39339, 46107, 55917, 64201, 83049, 91233, 97337, 138321, 158813, 192603, 249147, 292011, 476439, 577809, 747441, 876033, 1429317, 1733427, 2628099, 3017447, 4287951, 9052341, 27157023, 81471069]

約数ペア:

[(1, 81471069), (3, 27157023), (9, 9052341), (19, 4287951), (27, 3017447), (31, 2628099), (47, 1733427), (57, 1429317), (93, 876033), (109, 747441), (141, 577809), (171, 476439), (279, 292011), (327, 249147), (423, 192603), (513, 158813), (589, 138321), (837, 97337), (893, 91233), (981, 83049), (1269, 64201), (1457, 55917), (1767, 46107), (2071, 39339), (2679, 30411), (2943, 27683), (3379, 24111), (4371, 18639), (5123, 15903), (5301, 15369), (6213, 13113), (8037, 10137)]