21243926

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{6947}}^1$

素因数の和:7099

約数の個数: 16

約数和(自身を含む): 35017920

約数和(自身を除く): 13773994

約数列:

[1, 2, 11, 22, 139, 278, 1529, 3058, 6947, 13894, 76417, 152834, 965633, 1931266, 10621963, 21243926]

約数ペア:

[(1, 21243926), (2, 10621963), (11, 1931266), (22, 965633), (139, 152834), (278, 76417), (1529, 13894), (3058, 6947)]