208258020

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{385663}}^1$

素因数の和:385681

約数の個数: 48

約数和(自身を含む): 647915520

約数和(自身を除く): 439657500

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 90, 108, 135, 180, 270, 540, 385663, 771326, 1156989, 1542652, 1928315, 2313978, 3470967, 3856630, 4627956, 5784945, 6941934, 7713260, 10412901, 11569890, 13883868, 17354835, 20825802, 23139780, 34709670, 41651604, 52064505, 69419340, 104129010, 208258020]

約数ペア:

[(1, 208258020), (2, 104129010), (3, 69419340), (4, 52064505), (5, 41651604), (6, 34709670), (9, 23139780), (10, 20825802), (12, 17354835), (15, 13883868), (18, 11569890), (20, 10412901), (27, 7713260), (30, 6941934), (36, 5784945), (45, 4627956), (54, 3856630), (60, 3470967), (90, 2313978), (108, 1928315), (135, 1542652), (180, 1156989), (270, 771326), (540, 385663)]