19428227

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{97}}^1$

素因数の和:219

約数の個数: 32

約数和(自身を含む): 25288704

約数和(自身を除く): 5860477

約数列:

[1, 7, 13, 31, 71, 91, 97, 217, 403, 497, 679, 923, 1261, 2201, 2821, 3007, 6461, 6887, 8827, 15407, 21049, 28613, 39091, 48209, 89531, 200291, 213497, 273637, 626717, 1494479, 2775461, 19428227]

約数ペア:

[(1, 19428227), (7, 2775461), (13, 1494479), (31, 626717), (71, 273637), (91, 213497), (97, 200291), (217, 89531), (403, 48209), (497, 39091), (679, 28613), (923, 21049), (1261, 15407), (2201, 8827), (2821, 6887), (3007, 6461)]