21995413870

素因数分解:

$2^1\times 5^1\times {\mathrm{8887}}^1\times {\mathrm{247501}}^1$

素因数の和:256395

約数の個数: 16

約数和(自身を含む): 39596359968

約数和(自身を除く): 17600946098

約数列:

[1, 2, 5, 10, 8887, 17774, 44435, 88870, 247501, 495002, 1237505, 2475010, 2199541387, 4399082774, 10997706935, 21995413870]

約数ペア:

[(1, 21995413870), (2, 10997706935), (5, 4399082774), (10, 2199541387), (8887, 2475010), (17774, 1237505), (44435, 495002), (88870, 247501)]