20551784

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{4969}}^1$

素因数の和:5033

約数の個数: 32

約数和(自身を含む): 42940800

約数和(自身を除く): 22389016

約数列:

[1, 2, 4, 8, 11, 22, 44, 47, 88, 94, 188, 376, 517, 1034, 2068, 4136, 4969, 9938, 19876, 39752, 54659, 109318, 218636, 233543, 437272, 467086, 934172, 1868344, 2568973, 5137946, 10275892, 20551784]

約数ペア:

[(1, 20551784), (2, 10275892), (4, 5137946), (8, 2568973), (11, 1868344), (22, 934172), (44, 467086), (47, 437272), (88, 233543), (94, 218636), (188, 109318), (376, 54659), (517, 39752), (1034, 19876), (2068, 9938), (4136, 4969)]