20789027990

素因数分解:

$2^1\times 5^1\times {\mathrm{1949}}^1\times {\mathrm{1066651}}^1$

素因数の和:1068607

約数の個数: 16

約数和(自身を含む): 37439485200

約数和(自身を除く): 16650457210

約数列:

[1, 2, 5, 10, 1949, 3898, 9745, 19490, 1066651, 2133302, 5333255, 10666510, 2078902799, 4157805598, 10394513995, 20789027990]

約数ペア:

[(1, 20789027990), (2, 10394513995), (5, 4157805598), (10, 2078902799), (1949, 10666510), (3898, 5333255), (9745, 2133302), (19490, 1066651)]