19771191

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{457}}^1$

素因数の和:516

約数の個数: 48

約数和(自身を含む): 34295040

約数和(自身を除く): 14523849

約数列:

[1, 3, 9, 11, 19, 23, 33, 57, 69, 99, 171, 207, 209, 253, 437, 457, 627, 759, 1311, 1371, 1881, 2277, 3933, 4113, 4807, 5027, 8683, 10511, 14421, 15081, 26049, 31533, 43263, 45243, 78147, 94599, 95513, 115621, 199709, 286539, 346863, 599127, 859617, 1040589, 1797381, 2196799, 6590397, 19771191]

約数ペア:

[(1, 19771191), (3, 6590397), (9, 2196799), (11, 1797381), (19, 1040589), (23, 859617), (33, 599127), (57, 346863), (69, 286539), (99, 199709), (171, 115621), (207, 95513), (209, 94599), (253, 78147), (437, 45243), (457, 43263), (627, 31533), (759, 26049), (1311, 15081), (1371, 14421), (1881, 10511), (2277, 8683), (3933, 5027), (4113, 4807)]