28257284

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{642211}}^1$

素因数の和:642226

約数の個数: 12

約数和(自身を含む): 53945808

約数和(自身を除く): 25688524

約数列:

[1, 2, 4, 11, 22, 44, 642211, 1284422, 2568844, 7064321, 14128642, 28257284]

約数ペア:

[(1, 28257284), (2, 14128642), (4, 7064321), (11, 2568844), (22, 1284422), (44, 642211)]