18940311

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{17987}}^1$

素因数の和:18012

約数の個数: 20

約数和(自身を含む): 30471672

約数和(自身を除く): 11531361

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 351, 1053, 17987, 53961, 161883, 233831, 485649, 701493, 1456947, 2104479, 6313437, 18940311]

約数ペア:

[(1, 18940311), (3, 6313437), (9, 2104479), (13, 1456947), (27, 701493), (39, 485649), (81, 233831), (117, 161883), (351, 53961), (1053, 17987)]