18539875

素因数分解:

$5^3\times {\mathrm{71}}^1\times {\mathrm{2089}}^1$

素因数の和:2175

約数の個数: 16

約数和(自身を含む): 23474880

約数和(自身を除く): 4935005

約数列:

[1, 5, 25, 71, 125, 355, 1775, 2089, 8875, 10445, 52225, 148319, 261125, 741595, 3707975, 18539875]

約数ペア:

[(1, 18539875), (5, 3707975), (25, 741595), (71, 261125), (125, 148319), (355, 52225), (1775, 10445), (2089, 8875)]