19997740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{142841}}^1$

素因数の和:142857

約数の個数: 24

約数和(自身を含む): 47994912

約数和(自身を除く): 27997172

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 142841, 285682, 571364, 714205, 999887, 1428410, 1999774, 2856820, 3999548, 4999435, 9998870, 19997740]

約数ペア:

[(1, 19997740), (2, 9998870), (4, 4999435), (5, 3999548), (7, 2856820), (10, 1999774), (14, 1428410), (20, 999887), (28, 714205), (35, 571364), (70, 285682), (140, 142841)]