18971673

素因数分解:

$3^1\times 7^3\times {\mathrm{103}}^1\times {\mathrm{179}}^1$

素因数の和:306

約数の個数: 32

約数和(自身を含む): 29952000

約数和(自身を除く): 10980327

約数列:

[1, 3, 7, 21, 49, 103, 147, 179, 309, 343, 537, 721, 1029, 1253, 2163, 3759, 5047, 8771, 15141, 18437, 26313, 35329, 55311, 61397, 105987, 129059, 184191, 387177, 903413, 2710239, 6323891, 18971673]

約数ペア:

[(1, 18971673), (3, 6323891), (7, 2710239), (21, 903413), (49, 387177), (103, 184191), (147, 129059), (179, 105987), (309, 61397), (343, 55311), (537, 35329), (721, 26313), (1029, 18437), (1253, 15141), (2163, 8771), (3759, 5047)]