21168808

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{155653}}^1$

素因数の和:155676

約数の個数: 16

約数和(自身を含む): 42026580

約数和(自身を除く): 20857772

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 155653, 311306, 622612, 1245224, 2646101, 5292202, 10584404, 21168808]

約数ペア:

[(1, 21168808), (2, 10584404), (4, 5292202), (8, 2646101), (17, 1245224), (34, 622612), (68, 311306), (136, 155653)]