20808128

素因数分解:

$2^6\times {\mathrm{11}}^2\times {\mathrm{2687}}^1$

素因数の和:2721

約数の個数: 42

約数和(自身を含む): 45403008

約数和(自身を除く): 24594880

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 64, 88, 121, 176, 242, 352, 484, 704, 968, 1936, 2687, 3872, 5374, 7744, 10748, 21496, 29557, 42992, 59114, 85984, 118228, 171968, 236456, 325127, 472912, 650254, 945824, 1300508, 1891648, 2601016, 5202032, 10404064, 20808128]

約数ペア:

[(1, 20808128), (2, 10404064), (4, 5202032), (8, 2601016), (11, 1891648), (16, 1300508), (22, 945824), (32, 650254), (44, 472912), (64, 325127), (88, 236456), (121, 171968), (176, 118228), (242, 85984), (352, 59114), (484, 42992), (704, 29557), (968, 21496), (1936, 10748), (2687, 7744), (3872, 5374)]