7642220

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{2749}}^1$

素因数の和:2897

約数の個数: 24

約数和(自身を含む): 16170000

約数和(自身を除く): 8527780

約数列:

[1, 2, 4, 5, 10, 20, 139, 278, 556, 695, 1390, 2749, 2780, 5498, 10996, 13745, 27490, 54980, 382111, 764222, 1528444, 1910555, 3821110, 7642220]

約数ペア:

[(1, 7642220), (2, 3821110), (4, 1910555), (5, 1528444), (10, 764222), (20, 382111), (139, 54980), (278, 27490), (556, 13745), (695, 10996), (1390, 5498), (2749, 2780)]