20707775

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{257}}^1\times {\mathrm{293}}^1$

素因数の和:571

約数の個数: 24

約数和(自身を含む): 28216944

約数和(自身を除く): 7509169

約数列:

[1, 5, 11, 25, 55, 257, 275, 293, 1285, 1465, 2827, 3223, 6425, 7325, 14135, 16115, 70675, 75301, 80575, 376505, 828311, 1882525, 4141555, 20707775]

約数ペア:

[(1, 20707775), (5, 4141555), (11, 1882525), (25, 828311), (55, 376505), (257, 80575), (275, 75301), (293, 70675), (1285, 16115), (1465, 14135), (2827, 7325), (3223, 6425)]