20887101

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{211}}^1\times {\mathrm{647}}^1$

素因数の和:881

約数の個数: 24

約数和(自身を含む): 32145984

約数和(自身を除く): 11258883

約数列:

[1, 3, 9, 17, 51, 153, 211, 633, 647, 1899, 1941, 3587, 5823, 10761, 10999, 32283, 32997, 98991, 136517, 409551, 1228653, 2320789, 6962367, 20887101]

約数ペア:

[(1, 20887101), (3, 6962367), (9, 2320789), (17, 1228653), (51, 409551), (153, 136517), (211, 98991), (633, 32997), (647, 32283), (1899, 10999), (1941, 10761), (3587, 5823)]