18490881

素因数分解:

$3^1\times {\mathrm{47}}^1\times {\mathrm{199}}^1\times {\mathrm{659}}^1$

素因数の和:908

約数の個数: 16

約数和(自身を含む): 25344000

約数和(自身を除く): 6853119

約数列:

[1, 3, 47, 141, 199, 597, 659, 1977, 9353, 28059, 30973, 92919, 131141, 393423, 6163627, 18490881]

約数ペア:

[(1, 18490881), (3, 6163627), (47, 393423), (141, 131141), (199, 92919), (597, 30973), (659, 28059), (1977, 9353)]