19894165

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{5443}}^1$

素因数の和:5508

約数の個数: 16

約数和(自身を含む): 25869888

約数和(自身を除く): 5975723

約数列:

[1, 5, 17, 43, 85, 215, 731, 3655, 5443, 27215, 92531, 234049, 462655, 1170245, 3978833, 19894165]

約数ペア:

[(1, 19894165), (5, 3978833), (17, 1170245), (43, 462655), (85, 234049), (215, 92531), (731, 27215), (3655, 5443)]