19918415

素因数分解:

$5^1\times {\mathrm{11}}^3\times {\mathrm{41}}^1\times {\mathrm{73}}^1$

素因数の和:152

約数の個数: 32

約数和(自身を含む): 27300672

約数和(自身を除く): 7382257

約数列:

[1, 5, 11, 41, 55, 73, 121, 205, 365, 451, 605, 803, 1331, 2255, 2993, 4015, 4961, 6655, 8833, 14965, 24805, 32923, 44165, 54571, 97163, 164615, 272855, 362153, 485815, 1810765, 3983683, 19918415]

約数ペア:

[(1, 19918415), (5, 3983683), (11, 1810765), (41, 485815), (55, 362153), (73, 272855), (121, 164615), (205, 97163), (365, 54571), (451, 44165), (605, 32923), (803, 24805), (1331, 14965), (2255, 8833), (2993, 6655), (4015, 4961)]