20508628

素因数分解:

$2^2\times 7^1\times {\mathrm{509}}^1\times {\mathrm{1439}}^1$

素因数の和:1959

約数の個数: 24

約数和(自身を含む): 41126400

約数和(自身を除く): 20617772

約数列:

[1, 2, 4, 7, 14, 28, 509, 1018, 1439, 2036, 2878, 3563, 5756, 7126, 10073, 14252, 20146, 40292, 732451, 1464902, 2929804, 5127157, 10254314, 20508628]

約数ペア:

[(1, 20508628), (2, 10254314), (4, 5127157), (7, 2929804), (14, 1464902), (28, 732451), (509, 40292), (1018, 20146), (1439, 14252), (2036, 10073), (2878, 7126), (3563, 5756)]