19489405

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{439}}^1\times {\mathrm{683}}^1$

素因数の和:1140

約数の個数: 16

約数和(自身を含む): 25280640

約数和(自身を除く): 5791235

約数列:

[1, 5, 13, 65, 439, 683, 2195, 3415, 5707, 8879, 28535, 44395, 299837, 1499185, 3897881, 19489405]

約数ペア:

[(1, 19489405), (5, 3897881), (13, 1499185), (65, 299837), (439, 44395), (683, 28535), (2195, 8879), (3415, 5707)]