871120

素因数分解:

$2^4\times 5^1\times {\mathrm{10889}}^1$

素因数の和:10902

約数の個数: 20

約数和(自身を含む): 2025540

約数和(自身を除く): 1154420

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 10889, 21778, 43556, 54445, 87112, 108890, 174224, 217780, 435560, 871120]

約数ペア:

[(1, 871120), (2, 435560), (4, 217780), (5, 174224), (8, 108890), (10, 87112), (16, 54445), (20, 43556), (40, 21778), (80, 10889)]