25430920

素因数分解:

$2^3\times 5^1\times {\mathrm{223}}^1\times {\mathrm{2851}}^1$

素因数の和:3085

約数の個数: 32

約数和(自身を含む): 57496320

約数和(自身を除く): 32065400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 223, 446, 892, 1115, 1784, 2230, 2851, 4460, 5702, 8920, 11404, 14255, 22808, 28510, 57020, 114040, 635773, 1271546, 2543092, 3178865, 5086184, 6357730, 12715460, 25430920]

約数ペア:

[(1, 25430920), (2, 12715460), (4, 6357730), (5, 5086184), (8, 3178865), (10, 2543092), (20, 1271546), (40, 635773), (223, 114040), (446, 57020), (892, 28510), (1115, 22808), (1784, 14255), (2230, 11404), (2851, 8920), (4460, 5702)]