20505256

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{313}}^1\times {\mathrm{431}}^1$

素因数の和:769

約数の個数: 32

約数和(自身を含む): 40694400

約数和(自身を除く): 20189144

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 313, 431, 626, 862, 1252, 1724, 2504, 3448, 5947, 8189, 11894, 16378, 23788, 32756, 47576, 65512, 134903, 269806, 539612, 1079224, 2563157, 5126314, 10252628, 20505256]

約数ペア:

[(1, 20505256), (2, 10252628), (4, 5126314), (8, 2563157), (19, 1079224), (38, 539612), (76, 269806), (152, 134903), (313, 65512), (431, 47576), (626, 32756), (862, 23788), (1252, 16378), (1724, 11894), (2504, 8189), (3448, 5947)]