18881385

素因数分解:

$3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{17729}}^1$

素因数の和:17808

約数の個数: 16

約数和(自身を含む): 30637440

約数和(自身を除く): 11756055

約数列:

[1, 3, 5, 15, 71, 213, 355, 1065, 17729, 53187, 88645, 265935, 1258759, 3776277, 6293795, 18881385]

約数ペア:

[(1, 18881385), (3, 6293795), (5, 3776277), (15, 1258759), (71, 265935), (213, 88645), (355, 53187), (1065, 17729)]