28069717

素因数分解:

${\mathrm{13}}^2\times {\mathrm{37}}^1\times {\mathrm{67}}^2$

素因数の和:197

約数の個数: 18

約数和(自身を含む): 31689378

約数和(自身を除く): 3619661

約数列:

[1, 13, 37, 67, 169, 481, 871, 2479, 4489, 6253, 11323, 32227, 58357, 166093, 418951, 758641, 2159209, 28069717]

約数ペア:

[(1, 28069717), (13, 2159209), (37, 758641), (67, 418951), (169, 166093), (481, 58357), (871, 32227), (2479, 11323), (4489, 6253)]