19420004

素因数分解:

$2^2\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{4909}}^1$

素因数の和:4979

約数の個数: 24

約数和(自身を含む): 36294720

約数和(自身を除く): 16874716

約数列:

[1, 2, 4, 23, 43, 46, 86, 92, 172, 989, 1978, 3956, 4909, 9818, 19636, 112907, 211087, 225814, 422174, 451628, 844348, 4855001, 9710002, 19420004]

約数ペア:

[(1, 19420004), (2, 9710002), (4, 4855001), (23, 844348), (43, 451628), (46, 422174), (86, 225814), (92, 211087), (172, 112907), (989, 19636), (1978, 9818), (3956, 4909)]