20491856

素因数分解:

$2^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{16633}}^1$

素因数の和:16659

約数の個数: 40

約数和(自身を含む): 49502784

約数和(自身を除く): 29010928

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 44, 56, 77, 88, 112, 154, 176, 308, 616, 1232, 16633, 33266, 66532, 116431, 133064, 182963, 232862, 266128, 365926, 465724, 731852, 931448, 1280741, 1463704, 1862896, 2561482, 2927408, 5122964, 10245928, 20491856]

約数ペア:

[(1, 20491856), (2, 10245928), (4, 5122964), (7, 2927408), (8, 2561482), (11, 1862896), (14, 1463704), (16, 1280741), (22, 931448), (28, 731852), (44, 465724), (56, 365926), (77, 266128), (88, 232862), (112, 182963), (154, 133064), (176, 116431), (308, 66532), (616, 33266), (1232, 16633)]