21108543

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{127}}^1\times {\mathrm{3259}}^1$

素因数の和:3406

約数の個数: 16

約数和(自身を含む): 30044160

約数和(自身を除く): 8935617

約数列:

[1, 3, 17, 51, 127, 381, 2159, 3259, 6477, 9777, 55403, 166209, 413893, 1241679, 7036181, 21108543]

約数ペア:

[(1, 21108543), (3, 7036181), (17, 1241679), (51, 413893), (127, 166209), (381, 55403), (2159, 9777), (3259, 6477)]