18638997

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{229}}^1\times {\mathrm{2087}}^1$

素因数の和:2332

約数の個数: 16

約数和(自身を含む): 26893440

約数和(自身を除く): 8254443

約数列:

[1, 3, 13, 39, 229, 687, 2087, 2977, 6261, 8931, 27131, 81393, 477923, 1433769, 6212999, 18638997]

約数ペア:

[(1, 18638997), (3, 6212999), (13, 1433769), (39, 477923), (229, 81393), (687, 27131), (2087, 8931), (2977, 6261)]