211431

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{149}}^1$

素因数の和:206

約数の個数: 16

約数和(自身を含む): 316800

約数和(自身を除く): 105369

約数列:

[1, 3, 11, 33, 43, 129, 149, 447, 473, 1419, 1639, 4917, 6407, 19221, 70477, 211431]

約数ペア:

[(1, 211431), (3, 70477), (11, 19221), (33, 6407), (43, 4917), (129, 1639), (149, 1419), (447, 473)]