20178765

素因数分解:

$3^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{10937}}^1$

素因数の和:10989

約数の個数: 24

約数和(自身を含む): 35832888

約数和(自身を除く): 15654123

約数列:

[1, 3, 5, 9, 15, 41, 45, 123, 205, 369, 615, 1845, 10937, 32811, 54685, 98433, 164055, 448417, 492165, 1345251, 2242085, 4035753, 6726255, 20178765]

約数ペア:

[(1, 20178765), (3, 6726255), (5, 4035753), (9, 2242085), (15, 1345251), (41, 492165), (45, 448417), (123, 164055), (205, 98433), (369, 54685), (615, 32811), (1845, 10937)]