18919846

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{139}}^1\times {\mathrm{269}}^1$

素因数の和:444

約数の個数: 32

約数和(自身を含む): 32659200

約数和(自身を除く): 13739354

約数列:

[1, 2, 11, 22, 23, 46, 139, 253, 269, 278, 506, 538, 1529, 2959, 3058, 3197, 5918, 6187, 6394, 12374, 35167, 37391, 68057, 70334, 74782, 136114, 411301, 822602, 859993, 1719986, 9459923, 18919846]

約数ペア:

[(1, 18919846), (2, 9459923), (11, 1719986), (22, 859993), (23, 822602), (46, 411301), (139, 136114), (253, 74782), (269, 70334), (278, 68057), (506, 37391), (538, 35167), (1529, 12374), (2959, 6394), (3058, 6187), (3197, 5918)]