19986554

素因数分解:

$2^1\times 7^1\times {\mathrm{421}}^1\times {\mathrm{3391}}^1$

素因数の和:3821

約数の個数: 16

約数和(自身を含む): 34354176

約数和(自身を除く): 14367622

約数列:

[1, 2, 7, 14, 421, 842, 2947, 3391, 5894, 6782, 23737, 47474, 1427611, 2855222, 9993277, 19986554]

約数ペア:

[(1, 19986554), (2, 9993277), (7, 2855222), (14, 1427611), (421, 47474), (842, 23737), (2947, 6782), (3391, 5894)]