21712047

素因数分解:

$3^1\times 7^2\times {\mathrm{127}}^1\times {\mathrm{1163}}^1$

素因数の和:1307

約数の個数: 24

約数和(自身を含む): 33970176

約数和(自身を除く): 12258129

約数列:

[1, 3, 7, 21, 49, 127, 147, 381, 889, 1163, 2667, 3489, 6223, 8141, 18669, 24423, 56987, 147701, 170961, 443103, 1033907, 3101721, 7237349, 21712047]

約数ペア:

[(1, 21712047), (3, 7237349), (7, 3101721), (21, 1033907), (49, 443103), (127, 170961), (147, 147701), (381, 56987), (889, 24423), (1163, 18669), (2667, 8141), (3489, 6223)]