864580

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{311}}^1$

素因数の和:459

約数の個数: 24

約数和(自身を含む): 1834560

約数和(自身を除く): 969980

約数列:

[1, 2, 4, 5, 10, 20, 139, 278, 311, 556, 622, 695, 1244, 1390, 1555, 2780, 3110, 6220, 43229, 86458, 172916, 216145, 432290, 864580]

約数ペア:

[(1, 864580), (2, 432290), (4, 216145), (5, 172916), (10, 86458), (20, 43229), (139, 6220), (278, 3110), (311, 2780), (556, 1555), (622, 1390), (695, 1244)]