20263705

素因数分解:

$5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{103}}^1$

素因数の和:206

約数の個数: 48

約数和(自身を含む): 31584384

約数和(自身を除く): 11320679

約数列:

[1, 5, 7, 11, 35, 49, 55, 73, 77, 103, 245, 365, 385, 511, 515, 539, 721, 803, 1133, 2555, 2695, 3577, 3605, 4015, 5047, 5621, 5665, 7519, 7931, 17885, 25235, 28105, 37595, 39347, 39655, 52633, 55517, 82709, 196735, 263165, 277585, 368431, 413545, 578963, 1842155, 2894815, 4052741, 20263705]

約数ペア:

[(1, 20263705), (5, 4052741), (7, 2894815), (11, 1842155), (35, 578963), (49, 413545), (55, 368431), (73, 277585), (77, 263165), (103, 196735), (245, 82709), (365, 55517), (385, 52633), (511, 39655), (515, 39347), (539, 37595), (721, 28105), (803, 25235), (1133, 17885), (2555, 7931), (2695, 7519), (3577, 5665), (3605, 5621), (4015, 5047)]