19220720

素因数分解:

$2^4\times 5^1\times {\mathrm{240259}}^1$

素因数の和:240272

約数の個数: 20

約数和(自身を含む): 44688360

約数和(自身を除く): 25467640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 240259, 480518, 961036, 1201295, 1922072, 2402590, 3844144, 4805180, 9610360, 19220720]

約数ペア:

[(1, 19220720), (2, 9610360), (4, 4805180), (5, 3844144), (8, 2402590), (10, 1922072), (16, 1201295), (20, 961036), (40, 480518), (80, 240259)]