20751580

素因数分解:

$2^2\times 5^1\times {\mathrm{107}}^1\times {\mathrm{9697}}^1$

素因数の和:9813

約数の個数: 24

約数和(自身を含む): 43990128

約数和(自身を除く): 23238548

約数列:

[1, 2, 4, 5, 10, 20, 107, 214, 428, 535, 1070, 2140, 9697, 19394, 38788, 48485, 96970, 193940, 1037579, 2075158, 4150316, 5187895, 10375790, 20751580]

約数ペア:

[(1, 20751580), (2, 10375790), (4, 5187895), (5, 4150316), (10, 2075158), (20, 1037579), (107, 193940), (214, 96970), (428, 48485), (535, 38788), (1070, 19394), (2140, 9697)]