27800

素因数分解:

$2^3\times 5^2\times {\mathrm{139}}^1$

素因数の和:155

約数の個数: 24

約数和(自身を含む): 65100

約数和(自身を除く): 37300

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 139, 200, 278, 556, 695, 1112, 1390, 2780, 3475, 5560, 6950, 13900, 27800]

約数ペア:

[(1, 27800), (2, 13900), (4, 6950), (5, 5560), (8, 3475), (10, 2780), (20, 1390), (25, 1112), (40, 695), (50, 556), (100, 278), (139, 200)]