19691793

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{443}}^1\times {\mathrm{449}}^1$

素因数の和:909

約数の個数: 24

約数和(自身を含む): 31168800

約数和(自身を除く): 11477007

約数列:

[1, 3, 9, 11, 33, 99, 443, 449, 1329, 1347, 3987, 4041, 4873, 4939, 14619, 14817, 43857, 44451, 198907, 596721, 1790163, 2187977, 6563931, 19691793]

約数ペア:

[(1, 19691793), (3, 6563931), (9, 2187977), (11, 1790163), (33, 596721), (99, 198907), (443, 44451), (449, 43857), (1329, 14817), (1347, 14619), (3987, 4939), (4041, 4873)]