20704700

素因数分解:

$2^2\times 5^2\times {\mathrm{197}}^1\times {\mathrm{1051}}^1$

素因数の和:1262

約数の個数: 36

約数和(自身を含む): 45200232

約数和(自身を除く): 24495532

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 197, 394, 788, 985, 1051, 1970, 2102, 3940, 4204, 4925, 5255, 9850, 10510, 19700, 21020, 26275, 52550, 105100, 207047, 414094, 828188, 1035235, 2070470, 4140940, 5176175, 10352350, 20704700]

約数ペア:

[(1, 20704700), (2, 10352350), (4, 5176175), (5, 4140940), (10, 2070470), (20, 1035235), (25, 828188), (50, 414094), (100, 207047), (197, 105100), (394, 52550), (788, 26275), (985, 21020), (1051, 19700), (1970, 10510), (2102, 9850), (3940, 5255), (4204, 4925)]