20747468

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{661}}^1$

素因数の和:750

約数の個数: 48

約数和(自身を含む): 44486400

約数和(自身を除く): 23738932

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 59, 76, 118, 133, 236, 266, 413, 532, 661, 826, 1121, 1322, 1652, 2242, 2644, 4484, 4627, 7847, 9254, 12559, 15694, 18508, 25118, 31388, 38999, 50236, 77998, 87913, 155996, 175826, 272993, 351652, 545986, 740981, 1091972, 1481962, 2963924, 5186867, 10373734, 20747468]

約数ペア:

[(1, 20747468), (2, 10373734), (4, 5186867), (7, 2963924), (14, 1481962), (19, 1091972), (28, 740981), (38, 545986), (59, 351652), (76, 272993), (118, 175826), (133, 155996), (236, 87913), (266, 77998), (413, 50236), (532, 38999), (661, 31388), (826, 25118), (1121, 18508), (1322, 15694), (1652, 12559), (2242, 9254), (2644, 7847), (4484, 4627)]