18515185

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{443}}^1\times {\mathrm{643}}^1$

素因数の和:1104

約数の個数: 16

約数和(自身を含む): 24018624

約数和(自身を除く): 5503439

約数列:

[1, 5, 13, 65, 443, 643, 2215, 3215, 5759, 8359, 28795, 41795, 284849, 1424245, 3703037, 18515185]

約数ペア:

[(1, 18515185), (5, 3703037), (13, 1424245), (65, 284849), (443, 41795), (643, 28795), (2215, 8359), (3215, 5759)]