20477260

素因数分解:

$2^2\times 5^1\times {\mathrm{397}}^1\times {\mathrm{2579}}^1$

素因数の和:2985

約数の個数: 24

約数和(自身を含む): 43127280

約数和(自身を除く): 22650020

約数列:

[1, 2, 4, 5, 10, 20, 397, 794, 1588, 1985, 2579, 3970, 5158, 7940, 10316, 12895, 25790, 51580, 1023863, 2047726, 4095452, 5119315, 10238630, 20477260]

約数ペア:

[(1, 20477260), (2, 10238630), (4, 5119315), (5, 4095452), (10, 2047726), (20, 1023863), (397, 51580), (794, 25790), (1588, 12895), (1985, 10316), (2579, 7940), (3970, 5158)]