19997278

素因数分解:

$2^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{30391}}^1$

素因数の和:30447

約数の個数: 16

約数和(自身を含む): 35011584

約数和(自身を除く): 15014306

約数列:

[1, 2, 7, 14, 47, 94, 329, 658, 30391, 60782, 212737, 425474, 1428377, 2856754, 9998639, 19997278]

約数ペア:

[(1, 19997278), (2, 9998639), (7, 2856754), (14, 1428377), (47, 425474), (94, 212737), (329, 60782), (658, 30391)]