12780724

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{290471}}^1$

素因数の和:290486

約数の個数: 12

約数和(自身を含む): 24399648

約数和(自身を除く): 11618924

約数列:

[1, 2, 4, 11, 22, 44, 290471, 580942, 1161884, 3195181, 6390362, 12780724]

約数ペア:

[(1, 12780724), (2, 6390362), (4, 3195181), (11, 1161884), (22, 580942), (44, 290471)]