21721484

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{311}}^1\times {\mathrm{919}}^1$

素因数の和:1253

約数の個数: 24

約数和(自身を含む): 40185600

約数和(自身を除く): 18464116

約数列:

[1, 2, 4, 19, 38, 76, 311, 622, 919, 1244, 1838, 3676, 5909, 11818, 17461, 23636, 34922, 69844, 285809, 571618, 1143236, 5430371, 10860742, 21721484]

約数ペア:

[(1, 21721484), (2, 10860742), (4, 5430371), (19, 1143236), (38, 571618), (76, 285809), (311, 69844), (622, 34922), (919, 23636), (1244, 17461), (1838, 11818), (3676, 5909)]