21000724738

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{2722417}}^1$

素因数の和:2722474

約数の個数: 32

約数和(自身を含む): 39202819200

約数和(自身を除く): 18202094462

約数列:

[1, 2, 7, 14, 19, 29, 38, 58, 133, 203, 266, 406, 551, 1102, 3857, 7714, 2722417, 5444834, 19056919, 38113838, 51725923, 78950093, 103451846, 157900186, 362081461, 552650651, 724162922, 1105301302, 1500051767, 3000103534, 10500362369, 21000724738]

約数ペア:

[(1, 21000724738), (2, 10500362369), (7, 3000103534), (14, 1500051767), (19, 1105301302), (29, 724162922), (38, 552650651), (58, 362081461), (133, 157900186), (203, 103451846), (266, 78950093), (406, 51725923), (551, 38113838), (1102, 19056919), (3857, 5444834), (7714, 2722417)]