81312945

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{569}}^1\times {\mathrm{1361}}^1$

素因数の和:1945

約数の個数: 32

約数和(自身を含む): 149057280

約数和(自身を除く): 67744335

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 569, 1361, 1707, 2845, 3983, 4083, 6805, 8535, 9527, 11949, 19915, 20415, 28581, 47635, 59745, 142905, 774409, 2323227, 3872045, 5420863, 11616135, 16262589, 27104315, 81312945]

約数ペア:

[(1, 81312945), (3, 27104315), (5, 16262589), (7, 11616135), (15, 5420863), (21, 3872045), (35, 2323227), (105, 774409), (569, 142905), (1361, 59745), (1707, 47635), (2845, 28581), (3983, 20415), (4083, 19915), (6805, 11949), (8535, 9527)]