18990147

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{7883}}^1$

素因数の和:7970

約数の個数: 16

約数和(自身を含む): 28003968

約数和(自身を除く): 9013821

約数列:

[1, 3, 11, 33, 73, 219, 803, 2409, 7883, 23649, 86713, 260139, 575459, 1726377, 6330049, 18990147]

約数ペア:

[(1, 18990147), (3, 6330049), (11, 1726377), (33, 575459), (73, 260139), (219, 86713), (803, 23649), (2409, 7883)]