28123455

素因数分解:

$3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{26407}}^1$

素因数の和:26486

約数の個数: 16

約数和(自身を含む): 45633024

約数和(自身を除く): 17509569

約数列:

[1, 3, 5, 15, 71, 213, 355, 1065, 26407, 79221, 132035, 396105, 1874897, 5624691, 9374485, 28123455]

約数ペア:

[(1, 28123455), (3, 9374485), (5, 5624691), (15, 1874897), (71, 396105), (213, 132035), (355, 79221), (1065, 26407)]