21690711

素因数分解:

$3^2\times 7^1\times {\mathrm{127}}^1\times {\mathrm{2711}}^1$

素因数の和:2851

約数の個数: 24

約数和(自身を含む): 36102144

約数和(自身を除く): 14411433

約数列:

[1, 3, 7, 9, 21, 63, 127, 381, 889, 1143, 2667, 2711, 8001, 8133, 18977, 24399, 56931, 170793, 344297, 1032891, 2410079, 3098673, 7230237, 21690711]

約数ペア:

[(1, 21690711), (3, 7230237), (7, 3098673), (9, 2410079), (21, 1032891), (63, 344297), (127, 170793), (381, 56931), (889, 24399), (1143, 18977), (2667, 8133), (2711, 8001)]