18717741

素因数分解:

$3^2\times 7^1\times {\mathrm{199}}^1\times {\mathrm{1493}}^1$

素因数の和:1705

約数の個数: 24

約数和(自身を含む): 31075200

約数和(自身を除く): 12357459

約数列:

[1, 3, 7, 9, 21, 63, 199, 597, 1393, 1493, 1791, 4179, 4479, 10451, 12537, 13437, 31353, 94059, 297107, 891321, 2079749, 2673963, 6239247, 18717741]

約数ペア:

[(1, 18717741), (3, 6239247), (7, 2673963), (9, 2079749), (21, 891321), (63, 297107), (199, 94059), (597, 31353), (1393, 13437), (1493, 12537), (1791, 10451), (4179, 4479)]