28512380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109663}}^1$

素因数の和:109685

約数の個数: 24

約数和(自身を含む): 64482432

約数和(自身を除く): 35970052

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 109663, 219326, 438652, 548315, 1096630, 1425619, 2193260, 2851238, 5702476, 7128095, 14256190, 28512380]

約数ペア:

[(1, 28512380), (2, 14256190), (4, 7128095), (5, 5702476), (10, 2851238), (13, 2193260), (20, 1425619), (26, 1096630), (52, 548315), (65, 438652), (130, 219326), (260, 109663)]