20287628

素因数分解:

$2^2\times {\mathrm{107}}^2\times {\mathrm{443}}^1$

素因数の和:661

約数の個数: 18

約数和(自身を含む): 35919156

約数和(自身を除く): 15631528

約数列:

[1, 2, 4, 107, 214, 428, 443, 886, 1772, 11449, 22898, 45796, 47401, 94802, 189604, 5071907, 10143814, 20287628]

約数ペア:

[(1, 20287628), (2, 10143814), (4, 5071907), (107, 189604), (214, 94802), (428, 47401), (443, 45796), (886, 22898), (1772, 11449)]