81347189

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{55603}}^1$

素因数の和:55640

約数の個数: 16

約数和(自身を含む): 106759680

約数和(自身を除く): 25412491

約数列:

[1, 7, 11, 19, 77, 133, 209, 1463, 55603, 389221, 611633, 1056457, 4281431, 7395199, 11621027, 81347189]

約数ペア:

[(1, 81347189), (7, 11621027), (11, 7395199), (19, 4281431), (77, 1056457), (133, 611633), (209, 389221), (1463, 55603)]