21650571260

素因数分解:

$2^2\times 5^1\times {\mathrm{809}}^1\times {\mathrm{1338107}}^1$

素因数の和:1338925

約数の個数: 24

約数和(自身を含む): 45522434160

約数和(自身を除く): 23871862900

約数列:

[1, 2, 4, 5, 10, 20, 809, 1618, 3236, 4045, 8090, 16180, 1338107, 2676214, 5352428, 6690535, 13381070, 26762140, 1082528563, 2165057126, 4330114252, 5412642815, 10825285630, 21650571260]

約数ペア:

[(1, 21650571260), (2, 10825285630), (4, 5412642815), (5, 4330114252), (10, 2165057126), (20, 1082528563), (809, 26762140), (1618, 13381070), (3236, 6690535), (4045, 5352428), (8090, 2676214), (16180, 1338107)]