25430780

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{17909}}^1$

素因数の和:17989

約数の個数: 24

約数和(自身を含む): 54159840

約数和(自身を除く): 28729060

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 17909, 35818, 71636, 89545, 179090, 358180, 1271539, 2543078, 5086156, 6357695, 12715390, 25430780]

約数ペア:

[(1, 25430780), (2, 12715390), (4, 6357695), (5, 5086156), (10, 2543078), (20, 1271539), (71, 358180), (142, 179090), (284, 89545), (355, 71636), (710, 35818), (1420, 17909)]