31011280

素因数分解:

$2^4\times 5^1\times {\mathrm{387641}}^1$

素因数の和:387654

約数の個数: 20

約数和(自身を含む): 72101412

約数和(自身を除く): 41090132

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 387641, 775282, 1550564, 1938205, 3101128, 3876410, 6202256, 7752820, 15505640, 31011280]

約数ペア:

[(1, 31011280), (2, 15505640), (4, 7752820), (5, 6202256), (8, 3876410), (10, 3101128), (16, 1938205), (20, 1550564), (40, 775282), (80, 387641)]