19965085

素因数分解:

$5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{18401}}^1$

素因数の和:18444

約数の個数: 16

約数和(自身を含む): 28265472

約数和(自身を除く): 8300387

約数列:

[1, 5, 7, 31, 35, 155, 217, 1085, 18401, 92005, 128807, 570431, 644035, 2852155, 3993017, 19965085]

約数ペア:

[(1, 19965085), (5, 3993017), (7, 2852155), (31, 644035), (35, 570431), (155, 128807), (217, 92005), (1085, 18401)]