19782980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{141307}}^1$

素因数の和:141323

約数の個数: 24

約数和(自身を含む): 47479488

約数和(自身を除く): 27696508

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 141307, 282614, 565228, 706535, 989149, 1413070, 1978298, 2826140, 3956596, 4945745, 9891490, 19782980]

約数ペア:

[(1, 19782980), (2, 9891490), (4, 4945745), (5, 3956596), (7, 2826140), (10, 1978298), (14, 1413070), (20, 989149), (28, 706535), (35, 565228), (70, 282614), (140, 141307)]