21298431

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{137}}^1\times {\mathrm{673}}^1$

素因数の和:831

約数の個数: 32

約数和(自身を含む): 35716608

約数和(自身を除く): 14418177

約数列:

[1, 3, 7, 11, 21, 33, 77, 137, 231, 411, 673, 959, 1507, 2019, 2877, 4521, 4711, 7403, 10549, 14133, 22209, 31647, 51821, 92201, 155463, 276603, 645407, 1014211, 1936221, 3042633, 7099477, 21298431]

約数ペア:

[(1, 21298431), (3, 7099477), (7, 3042633), (11, 1936221), (21, 1014211), (33, 645407), (77, 276603), (137, 155463), (231, 92201), (411, 51821), (673, 31647), (959, 22209), (1507, 14133), (2019, 10549), (2877, 7403), (4521, 4711)]