19985945

素因数分解:

$5^1\times 7^1\times {\mathrm{443}}^1\times {\mathrm{1289}}^1$

素因数の和:1744

約数の個数: 16

約数和(自身を含む): 27492480

約数和(自身を除く): 7506535

約数列:

[1, 5, 7, 35, 443, 1289, 2215, 3101, 6445, 9023, 15505, 45115, 571027, 2855135, 3997189, 19985945]

約数ペア:

[(1, 19985945), (5, 3997189), (7, 2855135), (35, 571027), (443, 45115), (1289, 15505), (2215, 9023), (3101, 6445)]