18011919

素因数分解:

$3^1\times {\mathrm{71}}^1\times {\mathrm{103}}^1\times {\mathrm{821}}^1$

素因数の和:998

約数の個数: 16

約数和(自身を含む): 24620544

約数和(自身を除く): 6608625

約数列:

[1, 3, 71, 103, 213, 309, 821, 2463, 7313, 21939, 58291, 84563, 174873, 253689, 6003973, 18011919]

約数ペア:

[(1, 18011919), (3, 6003973), (71, 253689), (103, 174873), (213, 84563), (309, 58291), (821, 21939), (2463, 7313)]