19712909139

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{127}}^1\times {\mathrm{671947}}^1$

素因数の和:672095

約数の個数: 32

約数和(自身を含む): 33027588096

約数和(自身を除く): 13314678957

約数列:

[1, 3, 7, 11, 21, 33, 77, 127, 231, 381, 889, 1397, 2667, 4191, 9779, 29337, 671947, 2015841, 4703629, 7391417, 14110887, 22174251, 51739919, 85337269, 155219757, 256011807, 597360883, 938709959, 1792082649, 2816129877, 6570969713, 19712909139]

約数ペア:

[(1, 19712909139), (3, 6570969713), (7, 2816129877), (11, 1792082649), (21, 938709959), (33, 597360883), (77, 256011807), (127, 155219757), (231, 85337269), (381, 51739919), (889, 22174251), (1397, 14110887), (2667, 7391417), (4191, 4703629), (9779, 2015841), (29337, 671947)]