21891628

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{497537}}^1$

素因数の和:497552

約数の個数: 12

約数和(自身を含む): 41793192

約数和(自身を除く): 19901564

約数列:

[1, 2, 4, 11, 22, 44, 497537, 995074, 1990148, 5472907, 10945814, 21891628]

約数ペア:

[(1, 21891628), (2, 10945814), (4, 5472907), (11, 1990148), (22, 995074), (44, 497537)]