16391431

素因数分解:

$7^2\times {\mathrm{41}}^2\times {\mathrm{199}}^1$

素因数の和:295

約数の個数: 18

約数和(自身を含む): 19642200

約数和(自身を除く): 3250769

約数列:

[1, 7, 41, 49, 199, 287, 1393, 1681, 2009, 8159, 9751, 11767, 57113, 82369, 334519, 399791, 2341633, 16391431]

約数ペア:

[(1, 16391431), (7, 2341633), (41, 399791), (49, 334519), (199, 82369), (287, 57113), (1393, 11767), (1681, 9751), (2009, 8159)]