19949878

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{457}}^1$

素因数の和:568

約数の個数: 32

約数和(自身を含む): 34163136

約数和(自身を除く): 14213258

約数列:

[1, 2, 13, 23, 26, 46, 73, 146, 299, 457, 598, 914, 949, 1679, 1898, 3358, 5941, 10511, 11882, 21022, 21827, 33361, 43654, 66722, 136643, 273286, 433693, 767303, 867386, 1534606, 9974939, 19949878]

約数ペア:

[(1, 19949878), (2, 9974939), (13, 1534606), (23, 867386), (26, 767303), (46, 433693), (73, 273286), (146, 136643), (299, 66722), (457, 43654), (598, 33361), (914, 21827), (949, 21022), (1679, 11882), (1898, 10511), (3358, 5941)]