19804743

素因数分解:

$3^6\times 7^1\times {\mathrm{3881}}^1$

素因数の和:3906

約数の個数: 28

約数和(自身を含む): 33944208

約数和(自身を除く): 14139465

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 243, 567, 729, 1701, 3881, 5103, 11643, 27167, 34929, 81501, 104787, 244503, 314361, 733509, 943083, 2200527, 2829249, 6601581, 19804743]

約数ペア:

[(1, 19804743), (3, 6601581), (7, 2829249), (9, 2200527), (21, 943083), (27, 733509), (63, 314361), (81, 244503), (189, 104787), (243, 81501), (567, 34929), (729, 27167), (1701, 11643), (3881, 5103)]