28169855

素因数分解:

$5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{3709}}^1$

素因数の和:3759

約数の個数: 24

約数和(自身を含む): 40602240

約数和(自身を除く): 12432385

約数列:

[1, 5, 7, 31, 35, 49, 155, 217, 245, 1085, 1519, 3709, 7595, 18545, 25963, 114979, 129815, 181741, 574895, 804853, 908705, 4024265, 5633971, 28169855]

約数ペア:

[(1, 28169855), (5, 5633971), (7, 4024265), (31, 908705), (35, 804853), (49, 574895), (155, 181741), (217, 129815), (245, 114979), (1085, 25963), (1519, 18545), (3709, 7595)]