81309555

素因数分解:

$3^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{499}}^1$

素因数の和:601

約数の個数: 64

約数和(自身を含む): 155520000

約数和(自身を除く): 74210445

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 51, 71, 85, 135, 153, 213, 255, 355, 459, 499, 639, 765, 1065, 1207, 1497, 1917, 2295, 2495, 3195, 3621, 4491, 6035, 7485, 8483, 9585, 10863, 13473, 18105, 22455, 25449, 32589, 35429, 42415, 54315, 67365, 76347, 106287, 127245, 162945, 177145, 229041, 318861, 381735, 531435, 602293, 956583, 1145205, 1594305, 1806879, 3011465, 4782915, 5420637, 9034395, 16261911, 27103185, 81309555]

約数ペア:

[(1, 81309555), (3, 27103185), (5, 16261911), (9, 9034395), (15, 5420637), (17, 4782915), (27, 3011465), (45, 1806879), (51, 1594305), (71, 1145205), (85, 956583), (135, 602293), (153, 531435), (213, 381735), (255, 318861), (355, 229041), (459, 177145), (499, 162945), (639, 127245), (765, 106287), (1065, 76347), (1207, 67365), (1497, 54315), (1917, 42415), (2295, 35429), (2495, 32589), (3195, 25449), (3621, 22455), (4491, 18105), (6035, 13473), (7485, 10863), (8483, 9585)]