20687612

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{42743}}^1$

素因数の和:42769

約数の個数: 18

約数和(自身を含む): 39794664

約数和(自身を除く): 19107052

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 42743, 85486, 170972, 470173, 940346, 1880692, 5171903, 10343806, 20687612]

約数ペア:

[(1, 20687612), (2, 10343806), (4, 5171903), (11, 1880692), (22, 940346), (44, 470173), (121, 170972), (242, 85486), (484, 42743)]