20781782

素因数分解:

$2^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{11161}}^1$

素因数の和:11196

約数の個数: 24

約数和(自身を含む): 38174040

約数和(自身を除く): 17392258

約数列:

[1, 2, 7, 14, 19, 38, 49, 98, 133, 266, 931, 1862, 11161, 22322, 78127, 156254, 212059, 424118, 546889, 1093778, 1484413, 2968826, 10390891, 20781782]

約数ペア:

[(1, 20781782), (2, 10390891), (7, 2968826), (14, 1484413), (19, 1093778), (38, 546889), (49, 424118), (98, 212059), (133, 156254), (266, 78127), (931, 22322), (1862, 11161)]